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Parallel Universe (fiction)

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Parallel universe (fiction)



 
 
Parallel universe or alternative reality is a self-contained separate reality coexisting with one's own. A specific group of parallel universes is called a multiverse
Multiverse (science)

The multiverse is the hypothetical set of multiple possible universes that together comprise all of reality. The different universes within the multiverse are sometimes called parallel universes....
, although this term can also be used to describe the possible parallel universes that comprise physical reality
Reality

Reality, in everyday usage, means "the state of things as they actually exist". In a sense it is what is real. The term reality, in its widest sense, includes everything that being, whether or not it is observation or comprehension....
. While the terms "parallel universe" and "alternative reality" are generally synonymous and can be used interchangeably in most cases, there is sometimes an additional connotation implied with the term "alternative reality" that implies that the reality is a variant of our own.






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Parallel universe or alternative reality is a self-contained separate reality coexisting with one's own. A specific group of parallel universes is called a multiverse
Multiverse (science)

The multiverse is the hypothetical set of multiple possible universes that together comprise all of reality. The different universes within the multiverse are sometimes called parallel universes....
, although this term can also be used to describe the possible parallel universes that comprise physical reality
Reality

Reality, in everyday usage, means "the state of things as they actually exist". In a sense it is what is real. The term reality, in its widest sense, includes everything that being, whether or not it is observation or comprehension....
. While the terms "parallel universe" and "alternative reality" are generally synonymous and can be used interchangeably in most cases, there is sometimes an additional connotation implied with the term "alternative reality" that implies that the reality is a variant of our own. The term "parallel universe" is more general, without any connotations implying a relationship (or lack thereof) with our own universe. A universe where the very laws of nature are different (for example, it has no relativistic limitations and the speed of light can be exceeded) would in general count as a parallel universe but not an alternative reality.

Introduction

Fantasy has long borrowed the idea of "another world" from myth
Mythology

The word mythology refers to a body of folklore/myths/legends that a particular culture believes to be true and that often use the supernatural to interpret natural events and to explain the nature of the universe and humanity....
, legend
Legend

A legend is a narrative of human actions that are perceived both by teller and listeners to take place within human history and to possess certain qualities that give the tale verisimilitude ....
 and religion
Religion

A religion is an organized approach to human spirituality which usually encompasses a set of myth, symbols, beliefs and practices, often with a supernatural or transcendence quality, that give meaning to the practitioner's experiences of life through reference to a higher power or truth....
. Heaven
Heaven

Heaven may refer to the physical heavens, the atmosphere or the seemingly endless expanse of the universe beyond. This is the traditional literal meaning of the term in English, however since at least AD 1000, it is typically also used to refer to an afterlife plane of existence in various religions and spirituality philosophy, often descri...
, Hell
Hell

In many religious traditions, Hell is a place of suffering and punishment in the afterlife, often in the underworld. Religions with a linear Divinity history often depict Hell as endless ....
, Olympus
Olympus

A number of different things are named Olympus:...
, Valhalla
Valhalla

In Norse mythology, Valhalla is a majestic, enormous hall located in Asgard, ruled over by the god Odin. Chosen by Odin, half of those that die in combat travel to Valhalla upon death, led by valkyries, while the other half go to the goddess Freyja's field F?lkvangr....
 are all “alternative universes” different from the familiar material realm. Modern fantasy
Fantasy

Fantasy is a genre that uses magic and other supernatural forms as a primary element of Plot , Theme , and/or Setting . Fantasy is generally distinguished from science fiction and horror by the expectation that it steers clear of technological and macabre themes, respectively, though there is a great deal of overlap between the three ....
 often presents the concept as a series of planes of existence where the laws of nature differ, allowing magical phenomena of some sort on some planes. This concept was also found in ancient Hindu mythology
Hindu mythology

Hindu mythology is the large body of traditional narratives related to Hinduism, notably as contained in Sanskrit literature, such as the Sanskrit epics and the Puranas....
, in texts such as the Puranas
Puranas

The Puranas are a group of important Hindu religious texts, notably consisting of narratives of the history of the Universe from creation to destruction, genealogies of the kings, heroes, sages, and demigods, and descriptions of Hindu cosmology, philosophy, and geography....
, which expressed an infinite number of universes, each with its own gods. Similarly in Arabic literature
Arabic literature

Arabic literature is the writing produced, both prose and poetry, by writers of the Arabic language. It does not usually include works written using the Arabic alphabet but not in the Arabic language such as Persian literature and Urdu literature....
, "The Adventures of Bulukiya", a tale in the One Thousand and One Nights (Arabian Nights), describes the protagonist Bulukiya learning of alternative worlds/universes that are similar but different to his own. In other cases, in both fantasy and science fiction, a parallel universe is a single other material reality, and its co-existence with ours is a rationale to bring a protagonist from the author's reality into the fantasy's reality, such as in The Chronicles of Narnia
The Chronicles of Narnia

The Chronicles of Narnia is a series of seven fantasy novels for children written by C. S. Lewis. It is considered a classic of children's literature and is the author's best-known work, having sold over 120 million copies in 41 languages....
 by C. S. Lewis
C. S. Lewis

Clive Staples Lewis , commonly referred to as C. S. Lewis and known to his friends and family as Jack, was an academic, medievalist, literary critic, essayist, lay theologian and Christian apologist....
 or even the beyond-the-reflection travel in the two main works of Lewis Carroll
Lewis Carroll

Charles Lutwidge Dodgson , better known by the pen name Lewis Carroll , was an England author, mathematics, logician, Anglican deacon and photographer....
. Or this single other reality can invade our own, as when Margaret Cavendish
Margaret Cavendish

Margaret Cavendish, Duchess of Newcastle-upon-Tyne , was an English aristocrat and a prolific writer. Born Margaret Lucas, she was the youngest sister of prominent royalists Sir John Lucas and Charles Lucas....
's English heroine sends submarines and "birdmen" armed with "fire stones" back through the portal from the Blazing World to Earth and wreaks havoc on England's enemies. In dark fantasy
Dark Fantasy

Dark Fantasy was an United Statesn old-time radio show featuring horror and suspense stories. It had a short run of 31 episodes, debuting on November 14, 1941 and ending on June 19, 1942....
 or horror
Horror fiction

Horror fiction is fiction in any medium intended to scare, unsettle, or horrify the audience. Historically, the cause of the "horror" experience has often been the intrusion of a supernatural element into everyday human experience....
 the parallel world is often a hiding place for unpleasant things, and often the protagonist is forced to confront effects of this other world leaking into his own, as in most of the work of H. P. Lovecraft
H. P. Lovecraft

Howard Phillips Lovecraft was an United States author of horror fiction, fantasy fiction, and science fiction, known then simply as weird fiction....
 and the Doom computer game series. In such stories, the nature of this other reality is often left mysterious, known only by its effect on our own world.

Often the alternative worlds theme in science fiction is framed by postulating that every historical event spawns a new universe for every possible outcome, resulting in a number of alternate histories. This literary interpretation is sometimes rooted in the many-worlds interpretation
Many-worlds interpretation

The many-worlds interpretation is an interpretation of quantum mechanics.It is also known as MWI, the relative state formulation, theory of the universal wavefunction, parallel universes, many-universes interpretation or just many worlds....
 of quantum mechanics
Quantum mechanics

Quantum mechanics is a set of principles underlying the most fundamental known description of all physical systems at the microscopic scale . Notable amongst these principles are both a dual wave-like and particle-like behavior of matter and radiation, and prediction of probabilities in situations where classical physics predicts certaintie...
 formulated by the physicist Hugh Everett
Hugh Everett

Hugh Everett III was an American physicist who first proposed the many-worlds interpretation of quantum physics, which he called his "relative state" formulation....
 in 1957, an alternative to the Copenhagen interpretation
Copenhagen interpretation

The Copenhagen interpretation is an Interpretations of quantum mechanics of quantum mechanics. A key feature of quantum mechanics is that the state of every Elementary particle is described by a wavefunction, which is a mathematical representation used to calculate the probability for it to be found in a location, or state of motion....
 originally formulated by Niels Bohr
Niels Bohr

Niels Henrik David Bohr was a Denmark physicist who made fundamental contributions to understanding atomic structure and quantum mechanics, for which he received the Nobel Prize in Physics in 1922....
 and Werner Heisenberg
Werner Heisenberg

Werner Heisenberg was a German Theoretical physics who made foundational contributions to quantum mechanics and is best known for asserting the uncertainty principle of quantum theory....
 around 1927. (See: multiverse
Multiverse

The multiverse is the hypothetical set of multiple possible universes that together comprise all of reality.Multiverse may also refer to:...
.) This kind of alternative universe is often the backdrop of stories involving time travel
Time travel

Time travel is the concept of moving between different moments in time in a manner analogous to moving between different points in space, either sending objects backwards in time to a moment before the present, or sending objects forward from the present to the future without the need to experience the intervening period ....
 and is often used to rationalize the logical paradoxes that arise when an author allows characters to travel backward in time. (See: grandfather paradox
Grandfather paradox

The grandfather paradox is a proposed physical paradox of time travel, first described by the science fiction writer Ren? Barjavel in his 1943 book Le Voyageur Imprudent ....
.)


The concept also arises outside the framework of quantum mechanics, as is found in Jorge Luis Borges
Jorge Luis Borges

Jorge Francisco Isidoro Luis Borges was an Argentina writer born in Buenos Aires. He was brought up bilingual in Spanish and English. In 1914, his family moved to Switzerland where he attended school, then traveled around Spain....
 short story El jardín de senderos que se bifurcan ("The Garden of Forking Paths
The Garden of Forking Paths

"The Garden of Forking Paths" is a 1941 short story by Argentina writer and poet Jorge Luis Borges. It was his first work to be translated into English, appearing in Ellery Queen's Mystery Magazine in August 1948....
"), published in 1941 before the many-worlds interpretation had been invented. In the story, a Sinologist
Sinology

Sinology in general use is the study of China and things related to China, but, especially in the American academic context, refers more strictly to the study of classical language and literature, and the philological approach....
 discovers a manuscript by a Chinese writer where the same tale is recounted in several ways, often contradictory, and then explains to his visitor (the writer's grandson) that his relative conceived time as a "garden of forking paths", where things happen in parallel in infinitely branching ways. One of the first SF examples is John Wyndham
John Wyndham

John Wyndham was the pen name used by the often Apocalyptic and post-apocalyptic science fiction United Kingdom science fiction writer John Wyndham Parkes Lucas Beynon Harris ....
's Random Quest
Random Quest

Random Quest is a science fiction short story by John Wyndham.It was included in his 1961 collection Consider Her Ways, although the stories were written over a period of several years....
 about a man who, on awaking after a laboratory accident, finds himself in a parallel universe where World War II
World War II

World War II, or the Second World War , was a global military conflict which involved a Participants in World War II, including all of the great powers, organised into two opposing military alliances: the Allies of World War II and the Axis powers....
 never happened with consequences for his professional and personal life, giving him information he can use on return to his own universe.

While this is a common treatment in SF, it is by no means the only presentation of the idea, even in hard science fiction
Hard science fiction

Hard science fiction is a category of science fiction characterized by an emphasis on scientific or technical detail, or on scientific accuracy, or on both....
. Sometimes the parallel universe bears no historical relationship to any other world; as in the novel Raft
Raft (novel)

Raft is a 1991 science fiction book by author Stephen Baxter. Raft is both Baxter's first novel and first book in the Xeelee Sequence, although the Xeelee are not present....
 by Stephen Baxter
Stephen Baxter

Stephen Baxter is a United Kingdom of Great Britain and Northern Ireland hard science fiction author. He was born and raised Roman Catholic. He has degrees in mathematics and engineering....
, which posits a reality where the gravitational constant
Gravitational constant

The gravitational constant, denoted G, is an empirical physical constant involved in the calculation of the gravitation between objects with mass....
 is much larger than in our universe. (Note, however, that Baxter explains later in Vacuum Diagrams
Vacuum Diagrams

Vacuum Diagrams is a collection of science fiction short stories written by Stephen Baxter. The collection connects the novels of the Xeelee Sequence and also shows the history of mankind in the Xeelee universe, and ultimately the universe....
 that the protagonists in Raft are descended from people who came from the Xeelee Sequence
Xeelee Sequence

The Xeelee Sequence is a series of novels and short stories by United Kingdom science fiction author Stephen Baxter. The novels span several billions of years, describing the future expansion of Mankind, its war with its arch-nemesis , and the Xeelee's own war with dark matter entities called photino birds....
 universe.)

One motif is that the time flow in a parallel universe may be very different, so that a character returning to one might find the time passed very differently for those he left behind. This is found in folklore: King Herla visited Fairy and returned three centuries later; although only some of his men crumbled to dust on dismounting, Herla and his men who did not dismount were trapped on horseback, this being one folkloric account of the origin of the Wild Hunt
Wild Hunt

The Wild Hunt was a folk myth prevalent in former times across Northern, Western and Central Europe. The fundamental premise in all instances is the same: a phantasmal group of huntsmen with the accoutrements of hunting, horses, hounds, *etc., in mad pursuit across the skies or along the ground, or just above it....
. C. S. Lewis
C. S. Lewis

Clive Staples Lewis , commonly referred to as C. S. Lewis and known to his friends and family as Jack, was an academic, medievalist, literary critic, essayist, lay theologian and Christian apologist....
 made use of this in the Chronicles of Narnia; indeed, a character points out to two skeptics that there is no need for the time between the worlds to match up, but it would be very odd for the girl who claims to have visited a parallel universe to have dreamed up such a different time flow.

The division between science fiction and fantasy becomes fuzzier than usual when dealing with stories that explicitly leave the universe we are familiar with, especially when our familiar universe is portrayed as a subset of a multiverse. Picking a genre becomes less a matter of setting, and more a matter of theme and emphasis; the parts of the story the author wishes to explain and how they are explained. Narnia is clearly a fantasy, and the TV series Sliders
Sliders

Sliders is an United States science fiction television program that ran for five seasons from 1995 in television to 2000 in television. The series focuses on a group of travellers who "slide" between Parallel universe by use of a wormhole referred to as an "Sliders#Vortex."...
 is clearly science fiction, but works like the World of Tiers
World of Tiers

The World of Tiers novels are a series of connected science fiction/fantasy novels by Philip Jos? Farmer. These are set within a series of artificially-constructed universes, created and ruled by decadent beings , who are the inheritors of an advanced technology they no longer understand....
 series tend to occupy a much broader middle ground.

Uses in science fiction


While technically incorrect, and looked down upon by hard science-fiction fans and authors, the idea of another “dimension
Dimension

In mathematics, the dimension of a space is roughly defined as the minimum number of coordinates needed to specify every point within it. For example: a point on the unit circle in the plane can be specified by two Cartesian coordinates but one can make do with a single coordinate , so the circle is 1-dimensional even though it exists in...
” has become synonymous with the term “parallel universe”. The usage is particularly common in movies, television and comic books and much less so in modern prose science fiction.

In written science fiction, “new dimensions” more commonly — and more accurately — refer to additional coordinate axes, beyond the three spatial axes with which we are familiar. By proposing travel along these extra axes, which are not normally perceptible, the traveler can reach worlds that are otherwise unreachable and invisible.

In 1884, Edwin A. Abbott wrote the seminal novel exploring this concept called Flatland: A Romance of Many Dimensions
Flatland

Flatland: A Romance of Many Dimensions is an 1884 in literature science fiction novella by the England schoolmaster Edwin Abbott Abbott.As a satire, Flatland offered pointed observations on the social hierarchy of Victorian era culture....
. It describes a world of two dimensions inhabited by living squares, triangles, and circles, called Flatland, as well as Pointland (0 dimensions), Lineland (1 dimension), and Spaceland (three dimensions) and finally posits the possibilities of even greater dimensions. Isaac Asimov, in his foreword to the Signet Classics 1984 edition, described Flatland
Flatland

Flatland: A Romance of Many Dimensions is an 1884 in literature science fiction novella by the England schoolmaster Edwin Abbott Abbott.As a satire, Flatland offered pointed observations on the social hierarchy of Victorian era culture....
 as "The best introduction one can find into the manner of perceiving dimensions."

In 1895, The Time Machine
The Time Machine

The Time Machine is a novella by H. G. Wells, first published in 1895 and later directly adapted into at least two feature films of the same name, as well as two television versions, and a large number of comic book adaptations....
 by H. G. Wells
H. G. Wells

Herbert George Wells , known by his pen name H. G. Wells, was an England author, best known for his work in the science fiction genre. Wells and Jules Verne are each sometimes referred to as "The Father of Science Fiction"....
 used time as an additional “dimension” in this sense, taking the four-dimensional
Fourth dimension

In physics and mathematics, a vector of n real number can be understood as a Coordinate system in an n-dimensional Euclidean space. When n = 4, the set of all such locations is called 4-dimensional Euclidean space....
 model of classical physics
Classical physics

Classical physics is a general term used to describe the branches of physics based on principles developed before the rise of general theory of relativity and Quantum mechanics, usually including special theory of relativity....
 and interpreting time as a space like dimension in which humans could travel with the right equipment.

There are many examples where authors have explicitly created additional spatial dimensions for their characters to travel in, to reach parallel universes. Douglas Adams
Douglas Adams

Douglas Noel Adams was an England author, dramatist and musician. He is best known as the author of the The Hitchhiker's Guide to the Galaxy series....
, in the last book of the Hitchhiker's Guide to the Galaxy
The Hitchhiker's Guide to the Galaxy

The Hitchhiker's Guide to the Galaxy is a Comic science fiction series created by Douglas Adams. Originally a The Hitchhiker's Guide to the Galaxy broadcast on BBC Radio 4 in 1978, it was later adapted to other formats, and over several years it gradually became an international multi-media phenomenon....
 series, Mostly Harmless
Mostly Harmless

For the catch phrase, see Notable phrases from The Hitchhiker's Guide to the GalaxyMostly Harmless is a novel by Douglas Adams and the fifth book in the Hitchhiker's Guide to the Galaxy series....
, uses the idea of probability
Probability

Probability, or wikt:chance, is a way of expressing knowledge or belief that an Event will occur or has occurred. In mathematics the concept has been given an exact meaning in probability theory, that is used extensively in such areas of study as mathematics, statistics, finance, gambling, science, and philosophy to draw conclusions about t...
 as an extra axis in addition to the classical four dimensions of space and time. Though, according to the novel, they're not really parallel universes at all but only a model to capture the continuity of space, time and probability. Robert A. Heinlein
Robert A. Heinlein

Robert Anson Heinlein was an United States novelist and science fiction writer. Often called "the dean of science fiction writers", he is one of the most popular, influential, and controversial authors of the genre....
, in The Number of the Beast
The Number of the Beast (novel)

The Number of the Beast is a science fiction novel by Robert A. Heinlein published in 1980. The first edition featured a cover and interior illustrations by Richard M....
, postulated a six-dimensional universe. In addition to the three spatial dimensions, he invoked symmetry
Symmetry

Symmetry generally conveys two primary meanings. The first is an imprecise sense of harmonious or aesthetically-pleasing proportionality and balance; such that it reflects beauty or perfection....
 to add two new temporal dimensions, so there would be two sets of three. Like the fourth dimension of H. G. Wells’ "Time Traveller"
The Time Traveller (character)

The Time Traveller is the fictional protagonist in H. G. Wells's The Time Machine, a novel published in 1895. It tells the story of an amateur inventor and scientist known only as "The Time Traveller"....
, these extra dimensions can be traveled by persons using the right equipment.

Hyperspace


Perhaps the most common use of the concept of a parallel universe in science fiction is the concept of hyperspace. Used in science fiction, the concept of “hyperspace” often refers to a parallel universe that can be used as a faster-than-light
Faster-than-light

Faster-than-light Superluminal communication and interstellar travel refer to the propagation of information or matter faster than the speed of light....
 shortcut for interstellar travel
Interstellar travel

Interstellar space travel is unmanned or manned travel between stars. The concept of interstellar travel in starships is a staple in science fiction....
. Rationales for this form of hyperspace vary from work to work, but the two common elements are:
  1. at least some (if not all) locations in the hyperspace universe map to locations in our universe, providing the "entry" and "exit" points for travelers.
  2. the travel time between two points in the hyperspace universe is much shorter than the time to travel to the analogous points in our universe. This can be because of a different speed of light, different speed at which time passes, or the analogous points in the hyperspace universe are just much closer to each other.


Sometimes "hyperspace" is used to refer to the concept of additional coordinate axes. In this model, the universe is thought to be "crumpled" in some higher spatial dimension and that traveling in this higher spatial dimension, a ship can move vast distances in the common spatial dimensions. An analogy is to crumple a newspaper into a ball and stick a needle straight through, the needle will make widely spaced holes in the two-dimensional surface of the paper. While this idea invokes a "new dimension", it is not an example of a parallel universe. It is a more scientifically plausible use of hyperspace. (See wormhole
Wormhole

In physics, a wormhole is a hypothetical topology feature of spacetime that is fundamentally a 'shortcut' through space and time. Spacetime can be viewed as a 2D surface, and when 'folded' over, a wormhole bridge can be formed....
.)

While use of hyperspace is common, it is mostly used as a plot device
Plot device

A plot device is an element introduced into a narrative solely to advance or resolve the Plot of the story. In the hands of a skilled writer, the reader or viewer will not notice that the device is a construction of the author; it will seem to follow naturally from the setting or characters in the story....
 and thus of secondary importance. While a parallel universe may be invoked by the concept, the nature of the universe is not often explored. So, while stories involving hyperspace might be the most common use of the parallel universe concept in fiction, it is not the most common source of fiction about parallel universes.

Time travel and alternate history


The most common use of parallel universes in science fiction, when the concept is central to the story, is as a backdrop and/or consequence of time travel
Time travel

Time travel is the concept of moving between different moments in time in a manner analogous to moving between different points in space, either sending objects backwards in time to a moment before the present, or sending objects forward from the present to the future without the need to experience the intervening period ....
. A seminal example of this idea is in Fritz Leiber
Fritz Leiber

Fritz Reuter Leiber Jr. was an influential United States writer of fantasy fiction, horror fiction and science fiction. He was also an expert chess player and a champion fencing ....
’s novel, The Big Time
The Big Time

The Big Time is a short science fiction novel by Fritz Leiber. It won the Hugo Award in 1958.The Big Time is a vast, cosmic back story, hidden behind a claustrophobic front story with only a few characters....
 where there’s a war across time between two alternate future
Alternate future

In science fiction stories involving time travel, an alternate future or alternative future is a possible future which never comes to pass, typically because someone travels back into the past and alters it so that the events of the alternate future cannot occur....
s each side manipulating history to create a timeline that results into their own world. Time-travelers in fiction often accidentally or deliberately create alternate histories, such as in The Guns of the South
The Guns of the South

The Guns of the South is a novel by writer Harry Turtledove....
 by Harry Turtledove
Harry Turtledove

Harry Norman Turtledove is an United Statesn novelist, who has produced works in several genres including historical fiction, fantasy and science fiction....
 where the Confederate Army is given the technology to produce AK-47
AK-47

The AK-47 is a 7.62x39mm assault rifle developed in the Soviet Union by Mikhail Kalashnikov in two versions: the fixed stock AK-47 and the AKS-47 variant equipped with an underfolding metal shoulder stock....
 rifles and ends up winning the American Civil War
American Civil War

The American Civil War , also known as the War Between the States and several Naming the American Civil War, was a civil war in the United States....
. (However, Ward Moore
Ward Moore

Ward Moore was the working name of American author Joseph Ward Moore. Moore grew up in New York City, and later moved to Chicago, Illinois, and then to California....
 reversed this staple of alternate history fiction in his Bring the Jubilee
Bring the Jubilee

Bring the Jubilee, by Ward Moore, is a 1953 novel of alternate history, where the point of divergence was the Confederate States of America winning the Battle of Gettysburg, and eventually the American Civil War by July 4, 1864....
 (1953), where an alternative world where the Confederate States of America
Confederate States of America

The Confederate States of America formed as the government set up from 1861 to 1865 by eleven Southern United States U.S. state of the United States of America that had declared their secession from the U.S....
 won the Battle of Gettysburg
Battle of Gettysburg

The Battle of Gettysburg , fought in and around the town of Gettysburg, Pennsylvania, as part of the Gettysburg Campaign, was the battle with the largest number of casualties in the American Civil War and is frequently cited as the war's Turning point of the American Civil War....
 and the American Civil War
American Civil War

The American Civil War , also known as the War Between the States and several Naming the American Civil War, was a civil war in the United States....
 is destroyed after an historian and time traveller from the defeated United States of that world travels back to the scene of the battle and inadvertently changes the result so that the North wins that battle.) The alternate history novel 1632
1632 (novel)

1632 is the initial novel in the best-selling alternate history 1632 series book series written by historian, writer and editor Eric Flint. The flagship novel kicked off a collaborative fiction effort that has involved hundreds of contributors and dozens of authors....
 by Eric Flint
Eric Flint

Eric Flint is an American List of science fiction authors, editing, and publishing. The majority of his main works are alternate history science fiction, but he also writes humorous fantasy adventures....
 explicitly states, albeit briefly in a prologue, that the time travelers in the novel (an entire town from West Virginia
West Virginia

West Virginia is a U.S. state in the Appalachian, Upland South, and Mid-Atlantic States regions of the United States, bordered by Virginia on the southeast, Kentucky on the southwest, Ohio on the northwest, and Pennsylvania and Maryland on the northeast....
) have created a new and separate universe when they're transported into the midst of the Thirty Years War in 17th century Germany
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
. (This sort of thing is known as an ISOT among alternate history fans, after S.M. Stirling's Island in the Sea of Time
Island in the Sea of Time

Island in the Sea of Time is the first of the three alternate history novels of the Nantucket series by S. M. Stirling....
: an ISOT is when territory or a large group of people is transported back in time to another historical period or place.

The concept of "sidewise" time travel, a term taken from Murray Leinster's "Sidewise in Time
Sidewise in Time

"Sidewise in Time" is a science fiction short story by Murray Leinster that was first published in the June 1934 issue of Astounding Stories....
," is often used to allow characters to pass through many different alternate histories, all descendant from some common branch point. Often worlds that are similar to each other are considered closer to each other in terms of this sidewise travel. For example, a universe where World War II ended differently would be “closer” to us than one where Imperial China colonized the New World in the 15th century. H. Beam Piper
H. Beam Piper

Henry Beam Piper was an American science fiction author. He wrote many short stories and several novels. He is best known for his extensive Terro-Human Future History series of stories and a shorter series of "Paratime" Alternate history tales....
 used this concept, naming it "paratime" and writing a series of stories involving the Paratime Police who regulated travel between these alternative realities as well as the technology to do so. Keith Laumer
Keith Laumer

John Keith Laumer was an United States science fiction author. Prior to becoming a full-time writer, he was an officer in the United States Air Force and a U.S....
 used the same concept of "sideways" time travel in his 1962 novel Worlds of the Imperium
Worlds of the Imperium

Worlds of the Imperium is a science-fiction novel by Keith Laumer. It was originally published in 1962. It is an example of an alternate history novel in which a man from our reality becomes involved with another parallel world in which the American Revolution never happened and the secret of inter-world travel came under the control of the...
. More recently, Frederik Pohl
Frederik Pohl

Frederik George Pohl, Jr. is an United States science fiction science fiction writer, editor and science fiction fandom, with a career spanning over seventy years....
 used the idea in his novel The Coming of the Quantum Cats
The Coming of the Quantum Cats

The Coming of the Quantum Cats is a 1986 science fiction novel by American writer Frederik Pohl. It was originally serialized in Analog Science Fiction and Fact science-fiction magazine, January-April 1986....
 which is explicitly based on upon a human-scale reading of the "many worlds" interpretation of quantum mechanics, postulating that every historical event spawns a new universe for every possible outcome. Frequent 'types' of universe explored in sidewise and alternative history works include worlds in which the Nazis won the Second World War, such as in The Man in the High Castle
The Man in the High Castle

The Man in the High Castle is a 1962 alternate history novel by science fiction writer Philip K. Dick. The novel is set in the former United States in 1962, fifteen years after the Axis Powers defeated the Allies of World War II and after the U.S....
 by Philip K. Dick
Philip K. Dick

Philip Kindred Dick was an United States science fiction novelist, short story writer, and essayist. Dick explored sociological, political and metaphysics themes in novels dominated by monopoly corporations, Authoritarianism, and altered states of consciousness....
 and Fatherland
Fatherland (novel)

Fatherland is a bestselling 1992 Thriller novel by the England writer and Journalism Robert Harris , which doubles as a work of alternate history ....
 by Robert Harris
Robert Harris

Robert Harris or Rob Harris may refer to:* Robert Harris , governor of Anguilla* Robert Harris , Scottish football player* Robert Harris , American railroad president...
, and worlds in which the Roman Empire never fell, such as in Roma Eterna
Roma Eterna

Roma Eterna is a 2003 novel by Robert Silverberg which presents an alternate history in which the Roman Empire survives to the present day....
 by Robert Silverberg
Robert Silverberg

Robert Silverberg is a prolific United States author, best known for writing science fiction. He is a multiple winner of both the Hugo Award and Nebula Awards....
 and Romanitas
Romanitas (novel)

Romanitas is an alternate history fiction novel by Sophia McDougall, published by Orion Books. It is the first of a planned trilogy of novels based on a world where the Roman Empire has survived to contemporary times and now dominates much of the world....
 by Sophia McDougall
Sophia McDougall

Sophia McDougall is a United Kingdom novelist, playwright, and poet....
. In his novel Warlords of Utopia
Warlords of Utopia

Warlords of Utopia is an original novel by Lance Parkin set in the Faction Paradox universe. Although taking place in a shared universe, it is a stand-alone work that does not require any prior knowledge....
, part of the loosely linked Faction Paradox
Faction Paradox

Faction Paradox is a fictional time travelling cult/rebel group/organized crime syndicate created by Lawrence Miles. The Faction's belief-system as portrayed has some similarities to voodoo, and is sometimes described as such....
 series, Lance Parkin
Lance Parkin

Lance Parkin is a United Kingdom author, best known for writing fiction and reference books for television series, in particular Doctor Who and Emmerdale....
 explored a multiverse in which every universe in which Rome never fell goes to war with every universe in which the Nazis won WWII. The series was created by Lawrence Miles
Lawrence Miles

Lawrence Miles is a science fiction author best known for his work on original Doctor Who novels and the subsequent spin-off Faction Paradox....
, whose earlier work Dead Romance
Dead Romance

Dead Romance is an original novel by Lawrence Miles, originally published as part of the Virgin New Adventures series. The New Adventures were a spin-off from the long-running United Kingdom science fiction on television series Doctor Who....
 featured the concept of an artificially created universe existing within another -specifically, within a bottle - and explored the consequences of inhabitants of the 'real' universe entering the Universe-in-a-Bottle.

In the His Dark Materials
His Dark Materials

His Dark Materials is a trilogy of fantasy literature by Philip Pullman comprising Northern Lights , The Subtle Knife and The Amber Spyglass ....
 trilogy, the universe the protagonist starts in is a Victorian counterpart to ours, although it takes place at the same time. It also appears that the Protestant Reformation never happened.

Uses in fantasy


Stranger in a strange land

Oz and Surrounding Countrie
Fantasy authors often want to bring characters from the author's (and the reader's) reality into their created world. Before the mid-20th century, this was most often done by hiding fantastic worlds within hidden parts of the author's own universe. Peasants who seldom if ever traveled far from their villages could not conclusively say that it was impossible that an ogre
Ogre

An ogre is a large, cruel and hideous humanoid monster], featured in mythology, folklore and fiction. Ogres are often depicted in fairy tales and folklore as feeding on human beings, and have appeared in many classic works of literature....
 or other fantastical beings could live an hour away, but increasing geographical knowledge meant that such locations had to be farther and farther off. Characters in the author's world could board a ship and find themselves on a fantastic island, as Jonathan Swift
Jonathan Swift

Jonathan Swift was an Anglo-Irish satire, essayist, political pamphleteer , poet and cleric who became Dean of St. Patrick's Cathedral, Dublin, Dublin....
 does in Gulliver's Travels
Gulliver's Travels

Gulliver's Travels , officially Travels into Several Remote Nations of the World, in Four Parts. By Lemuel Gulliver, First a Surgeon, and then a Captain of several Ships, is a novel by Jonathan Swift that is both a satire on human nature and a parody of the "travellers' tales" literary sub-genre....
 or in the 1949 novel Silverlock
Silverlock

Silverlock is a novel by John Myers Myers published in 1949. It recounts the adventures of A. Clarence Shandon as he takes a trip through the land of great literature....
 by John Myers Myers
John Myers Myers

John Myer Myers was an American author best known for his fantasy novel, Silverlock. He lived in Tempe, Arizona....
, or be sucked up into a tornado
Tornado

A tornado is a violent, rotating column of air which is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud....
 and land in Oz
Land of Oz

Oz is a fairy country containing four lands under the rule of high king.It was first introduced in The Wonderful Wizard of Oz by L. Frank Baum, one of many fairy countries that he created for his books....
. These "lost world
Lost World (genre)

The Lost World literary genre is a fantasy or science fiction genre that involves the discovery of a new world out of time, place, or both. It began as a subgenre of the late-Victorian imperial romance and remains popular to this day....
" stories can be seen as geographic equivalents of a "parallel universe", as the worlds portrayed are separate from our own, and hidden to everyone except those who take the difficult journey there. The geographic "lost world" can blur into a more explicit "parallel universe" when the fantasy realm overlaps a section of the "real" world, but is much larger inside than out, as in Robert Holdstock
Robert Holdstock

Robert Paul Holdstock is an English novelist and author best known for his works of fantasy literature, predominantly in the fantasy subgenres of mythic fiction....
's novel Mythago Wood
Mythago Wood

Mythago Wood is a fantasy novel written by the award winning author Robert Holdstock. This full length novel was originally published in the United Kingdom in 1984 and is an expanded version of a novella of the same name previously released by Robert Holdstock....
.

After the mid-20th century, perhaps influenced by ideas from science fiction, perhaps because exploration had made many places on the map too clear to write "Here there be dragons
Here be dragons

"Here be dragons" is a phrase used to denote dangerous or unexplored territories, in imitation of the infrequent medieval practice of putting sea serpents and other mythological creatures in blank areas of maps....
", many fantasy worlds became completely separate from the author's world. A common trope
Trope (literature)

A literary trope is a common pattern, theme , motif in literature, or a figure of speech in which words are used in a sense different from their literal meaning....
 is a portal
Portal (fiction)

A portal in fiction is a magical or technology doorway that connects two distant locations.Portals are a common concept in science fiction and fantasy fiction....
 or artifact that connects worlds together, prototypical examples being the wardrobe in C. S. Lewis
C. S. Lewis

Clive Staples Lewis , commonly referred to as C. S. Lewis and known to his friends and family as Jack, was an academic, medievalist, literary critic, essayist, lay theologian and Christian apologist....
' The Lion, the Witch, and the Wardrobe, or the sigil in James Branch Cabell
James Branch Cabell

James Branch Cabell, was an United States author of fantasy fiction and belles lettres. Cabell was well regarded by his contemporaries, including H....
's The Cream of the Jest. In Hayao Miyazaki's
Hayao Miyazaki

is a prominent filmmaker of many popular animated feature films. He is also the co-founder of Studio Ghibli, an animation studio and production company....
 Spirited Away
Spirited Away

is a 2001 in film Japanese anime written and directed by famed animator Hayao Miyazaki and produced by Studio Ghibli. The film sees a sullen ten-year-old girl in the middle of her family's move to the suburbs wander into a world ruled by gods, witches, and monsters; where humans are changed into animals; and a bathhouse for these creatures....
, Chihiro Ogino and her parents walk through a long tunnel into the spirit world. The main difference between this type of story and the "lost world" above, is that the fantasy realm can only be reached by certain people, or at certain times, or after following certain rituals, or with the proper artifact.

In some cases, physical travel is not even possible, and the character in our reality travels in a dream or some other altered state of consciousness
Altered state of consciousness

An altered state of consciousness, , also named altered state of mind is any condition which is significantly different from a normal waking beta wave state....
. Examples include the Dream Cycle
Dream Cycle

The Dream Cycle is one of the three major categories of the fictional works of H. P. Lovecraft . Although often overlooked for his Cthulhu Mythos, , the Dream Cycle itself could be regarded as a separate wikt:mythos because of its consistent use of places and characters....
 stories by H. P. Lovecraft
H. P. Lovecraft

Howard Phillips Lovecraft was an United States author of horror fiction, fantasy fiction, and science fiction, known then simply as weird fiction....
 or the Thomas Covenant stories of Stephen R. Donaldson
Stephen R. Donaldson

Stephen Reeder Donaldson is an United States fantasy fiction, science fiction and Mystery fiction novelist. He earned his bachelor's degree from The College of Wooster and master's degree from Kent State University....
. Often, stories of this type have as a major theme the nature of reality itself, questioning if the dream-world can have the same "reality" as the waking world. Science fiction often employs this theme (usually without the dream-world being "another" universe) in the ideas of cyberspace
Cyberspace

Cyberspace — from the Greek language — is the global domain of electro-magnetics accessed through electronic technology and exploited through the modulation of electromagnetic energy to achieve a wide range of communication and control system capabilities....
 and virtual reality
Virtual reality

Virtual reality is a technology which allows a user to interact with a computer-simulated environment, whether that environment is a simulation of the real world or an imaginary world....
.

Between the worlds

Most stories in this mold simply transport a character from the real world into the fantasy world
Fantasy world

A fantasy world is a type of imaginary world, part of a fictional universe used in fantasy novels and games. Typical worlds involve magic or magical abilities and often, but not always, either a medieval or futuristic theme....
 where the bulk of the action takes place. Whatever gate is used (such as the tollbooth in The Phantom Tollbooth
The Phantom Tollbooth

The Phantom Tollbooth is a children's adventure novel and a modern fairy tale, written by Norton Juster and illustrated by Jules Feiffer. It tells the story of a bored young boy named Milo who unexpectedly receives a magic toll road one afternoon and, having nothing better to do, drives through, only to find himself in the Kingdom of Wis...
 by Norton Juster
Norton Juster

Norton Juster is an American architect and author. He is famous primarily for writing children's literature; among them The Phantom Tollbooth and The Dot and the Line....
, or the mirror in Lewis Carroll
Lewis Carroll

Charles Lutwidge Dodgson , better known by the pen name Lewis Carroll , was an England author, mathematics, logician, Anglican deacon and photographer....
's Through the Looking Glass) is left behind for the duration of the story, until the end, and then only if the protagonists will return.

However, in a few cases the interaction between the worlds is an important element, so that the focus is not on one world or the other, but on both, and their interaction. After Rick Cook
Rick Cook

Rick Cook is a light fantasy author from the United States, best known for his Wizardry series of books. His writing includes many computer inside jokes, and is better enjoyed by those who have a background in computers....
 introduced a computer programmer into a high fantasy
High fantasy

High fantasy or epic fantasy is a Genre of fantasy that is set in invented or Parallel universe . Built upon the platform of a diverse body of works in the already very popular fantasy genre, high fantasy came to fruition through the work of authors such as C....
 world, his wizardry
Rick Cook

Rick Cook is a light fantasy author from the United States, best known for his Wizardry series of books. His writing includes many computer inside jokes, and is better enjoyed by those who have a background in computers....
 series steadily acquired more interactions between this world and ours. In Aaron Allston
Aaron Allston

Aaron Allston is an United States novelist of many science fiction books, notably Star Wars novels. His works include those of the Star Wars: X-wing series: Wraith Squadron , Iron Fist , Solo Command, Starfighters of Adumar....
's Doc Sidhe
Aaron Allston

Aaron Allston is an United States novelist of many science fiction books, notably Star Wars novels. His works include those of the Star Wars: X-wing series: Wraith Squadron , Iron Fist , Solo Command, Starfighters of Adumar....
 our "grim world" is paralleled by a "fair world" where the elves live and history echoes ours. A major portion of the plot deals with preventing a change in interactions between the worlds. Margaret Ball
Margaret Ball (writer)

Margaret Ball is a science fiction and fantasy author who lives in Austin, Texas. Married and with two kids, she spends time writing, making quilts, embeadery, and taking care of kids at her home....
, in No Earthly Sunne, depicts the interaction of our world with Faerie, and the efforts of the Queen of Faerie to deal with the slow drifting apart of Earth and Faerie. Poul Anderson
Poul Anderson

Poul William Anderson was an American science fiction author who wrote during a Golden Age of Science Fiction of the genre. Anderson also authored several works of fantasy....
 depicts Hell as a parallel universe in Operation Chaos, and the need to transfer equivalent amounts of mass between the worlds explains why a changeling
Changeling

A Changeling is a creature found in Western Europe folklore and folk religion, it is typically described as being the offspring of a fairy, troll, elf or other legendary creature that has been secretly left in the place of a human child....
 is left for a kidnapped child. Interactions between magical and scientific universes, and the protagonists' attempts to restore and maintain the balance between them, are major plot points in Piers Anthony
Piers Anthony

Piers Anthony Dillingham Jacob is an English American author in the science fiction and fantasy genres, publishing under the name Piers Anthony....
's Apprentice Adept
Apprentice Adept

The Apprentice Adept Series is a seven-book fantasy and science fiction series by Piers Anthony. The series takes place on Phaze and Proton, two worlds occupying the same space in two different Parallel universe ....
 series; he depicts two worlds, the "SF" planet Proton and the fantasy-based Phaze, such that every person born in either world has a physical duplicate on the other world. Only when one duplicate has died can the other cross between the worlds. Several of his Xanth
Xanth

Xanth is a fantasy world created by author Piers Anthony for a series of novels....
 novels also revolve around interactions between the magical realm of Xanth and "Mundania
Mundane

In science fiction and science fiction fandom, a mundane is a person who does not belong to a particular group, according to the members of that group; the implication is that such persons, lacking imagination, are concerned solely with the mundane: the quotidian and ordinary....
".

Multiple worlds, rather than a pair, increase the importance of the relationships. In The Lion, the Witch, and the Wardrobe, there are only our world and Narnia, but in other of C. S. Lewis's works, there are hints of other worlds, and in The Magician's Nephew
The Magician's Nephew

The Magician's Nephew is a fantasy fiction novel for children written by C. S. Lewis. It was the sixth book published in his The Chronicles of Narnia series, but is the first in the chronology of the Narnia novels' fictional universe....
, the Wood between the Worlds
Wood between the Worlds

The Wood between the Worlds is a linking room location in The Magician's Nephew, part of The Chronicles of Narnia series by C. S. Lewis....
 shows many possibilities, and the plot is governed by transportation between worlds, and the effort to right problems stemming from them. In His Dark Materials
His Dark Materials

His Dark Materials is a trilogy of fantasy literature by Philip Pullman comprising Northern Lights , The Subtle Knife and The Amber Spyglass ....
, the two protagonist Lyra and Will find themselves lost amongst many worlds, and travel them looking for the other. In Andre Norton
Andre Norton

Andre Alice Norton was an USA science fiction and fantasy author . Born Alice Mary Norton in Cleveland, Ohio, she published her first novel in 1934, was the first woman to receive the Gandalf Grand Master Award from the World Science Fiction Society in 1977, and won the Damon Knight Memorial Grand Master Award from the SFWA in 1983....
's Witch World
Witch World

The Witch World by Andre Norton is a long series of fantasies laid in a Parallel universe where magic works and, at the beginning at least, is the exclusive property of women....
, begun with a man from Earth being transported to this world, gates frequently lead to other worlds — or come from them. While an abundance of illusions, disguises, and magic that repels attention make certain parts of Witch World look like parallel worlds, some are clearly parallel in that time runs differently in them, and such gates pose a repeated problem in Witch World. In the radio sitcom Undone
Undone (radio series)

Undone is the title of a radio comedy broadcast by the BBC on the digital channel BBC 7. It uses a sci-fi theme of parallel universes to poke fun at life and especially the media business in London....
, the main character, Edna Turner, prevents people from a parallel version of London
London

London is the capital of both England and the United Kingdom, and the most populous municipality in the European Union. An important settlement for two millennia, History of London goes back to its founding by the Roman Empire....
 called "Undone" from moving to London and making the city too weird. There are other parallel versions of London, and one of the main plots in the series is the attempt by The Prince to unite all versions of London together.

Linking rooms of various types (not all actual rooms) can hook together any number of worlds. The characters may chose only one, but the choice is all important in determining the worlds.

Fantasy multiverses

The idea of a multiverse
Multiverse (science)

The multiverse is the hypothetical set of multiple possible universes that together comprise all of reality. The different universes within the multiverse are sometimes called parallel universes....
 is as fertile a subject for fantasy as it is for science fiction, allowing for epic settings and godlike protagonists. Among the most epic and far-ranging fantasy "multiverses" is that of Michael Moorcock
Michael Moorcock

Michael John Moorcock is an English writer primarily of science fiction and fantasy fiction who has also published a number of literary novels....
. Like many authors after him, Moorcock was inspired by the many worlds interpretation of quantum mechanics
Quantum mechanics

Quantum mechanics is a set of principles underlying the most fundamental known description of all physical systems at the microscopic scale . Notable amongst these principles are both a dual wave-like and particle-like behavior of matter and radiation, and prediction of probabilities in situations where classical physics predicts certaintie...
, saying:
It was an idea in the air, as most of these are, and I would have come across a reference to it in New Scientist (one of my best friends was then editor) ... [or] physicist friends would have been talking about it. ... Sometimes what happens is that you are imagining these things in the context of fiction while the physicists and mathematicians are imagining them in terms of science. I suspect it is the romantic imagination working, as it often does, perfectly efficiently in both the arts and the sciences.
Unlike many science-fiction interpretations, Moorcock's Eternal Champion
Eternal Champion

For the video game, see Eternal ChampionsThe Eternal Champion is a fictional creation of the author Michael Moorcock and is a recurrent feature in many of his novels....
 stories go far beyond alternate history to include mythic
Mythology

The word mythology refers to a body of folklore/myths/legends that a particular culture believes to be true and that often use the supernatural to interpret natural events and to explain the nature of the universe and humanity....
 and sword and sorcery
Sword and sorcery

Sword and sorcery is a Fantasy subgenres generally characterized by swashbuckling heroes engaged in exciting and violent conflicts. An element of Romance is often present, as is an element of Magic and the supernatural....
 settings as well as some worlds more similar to our own. However, the Eternal Champion himself is incarnate in all of them.

Roger Zelazny
Roger Zelazny

Roger Joseph Zelazny was an United States writer of fantasy and science fiction short story and novels. He won the Nebula award three times and the Hugo award six times , including two Hugos for novels: the serialized novel ...And Call Me Conrad and the novel Lord of Light ....
 used a mythic cosmology
Cosmology

Cosmology is study of the Universe in its totality, and by extension, humanity's place in it. Though the word cosmology is recent , study of the Universe has a long history involving science, philosophy, esotericism, and religion....
 in his Chronicles of Amber series. His protagonist is a member of the royal family of Amber, whose members represent a godlike pantheon
Pantheon (gods)

A pantheon is a set of all the gods of a particular polytheistic religion or mythology.Max Weber's 1922 opus, Economy and Society discusses the link between a pantheon of gods and the development of monotheism....
 ruling over a prototypical universe that represents Order. All other universes are increasingly distorted "shadows" of it, ending finally at the other extreme, Chaos, which is the complete negation of the prototype. Travel between these "shadow" universes is only possible by beings descended from the blood of this pantheon. Those "of the blood" can walk through Shadow, imagining any possible reality and then walk to it, making their environment more similar to their desire as they go. It is argued between the characters whether these "shadows" even exist before they're imagined by a member of the royal family of Amber, or if the "shadows'" existence can be seen as an act of godlike creation.

In the World of Tiers
World of Tiers

The World of Tiers novels are a series of connected science fiction/fantasy novels by Philip Jos? Farmer. These are set within a series of artificially-constructed universes, created and ruled by decadent beings , who are the inheritors of an advanced technology they no longer understand....
 novels by Philip José Farmer
Philip José Farmer

Philip Jos? Farmer was an United States author, principally known for his science fiction and fantasy fiction novels and short story.Farmer is best known for his Riverworld series and the earlier World of Tiers series....
, the idea of godlike protagonists is even more explicit. The background of the stories is a multiverse where godlike beings have created a number of pocket universe
Pocket universe

Pocket universes are a type of very small Parallel universe sometimes found in science fiction and fantasy. They are sometimes "attached" to a larger parent universe, making them literally pockets of space, but this is not a necessary feature and the name generally just refers to their small size....
s that represent their own desires. Our own world is part of this series, but interestingly our own universe is revealed to be much smaller than it appears, ending at the edge of the solar system
Solar System

The Solar System consists of the Sun and those Astronomical object bound to it by gravity: the eight planets and five dwarf planets, their 173 known Natural satellite, and billions of Small Solar System body....
.

There are multiverses also in Warcraft universe
Warcraft Universe

The Warcraft universe is a fictional universe in which a series of games and books published by Blizzard Entertainment are set. Players were first introduced to this universe in 1994 with the original Warcraft: Orcs & Humans in Eastern Kingdoms of the planet Azeroth....
, in The Chronicles of Narnia
The Chronicles of Narnia

The Chronicles of Narnia is a series of seven fantasy novels for children written by C. S. Lewis. It is considered a classic of children's literature and is the author's best-known work, having sold over 120 million copies in 41 languages....
, Terry Pratchett
Terry Pratchett

Sir Terence David John Pratchett, Officer of the Order of the British Empire is an England novelist, known for his frequently comical work in the fantasy genre....
's Discworld
Discworld

Discworld is a comedy fantasy book series by the British author Terry Pratchett, set on Discworld , a Flat Earth balanced on the backs of four elephants which, in turn, stand on the back of a giant turtle, Discworld #Great A'Tuin, the star turtle....
 series, and in Diana Wynne Jones
Diana Wynne Jones

Diana Wynne Jones is a United Kingdom writer, principally of fantasy novels for children's literature and adults, as well as a small amount of non-fiction....
's Chrestomanci
Chrestomanci

Chrestomanci is the title of a position held by at least two major characters in a series of fantasy novels by Diana Wynne Jones. It is also the name given to the book series....
, Howl's Moving Castle
Howl's Moving Castle

Howl's Moving Castle is a young adult fantasy fiction novel by British author Diana Wynne Jones, first published in 1986. It won a Boston Globe-Horn Book Award and was named an American Library Association book for both children and young adults....
 and Deep Secret
Deep Secret

Deep Secret is a 1997 novel by Diana Wynne Jones. It is the first in the Magid series....
 books and in her standalone book A Sudden Wild Magic.

Fictional universe as alternative universe

There are many examples of the meta-fictional idea of having the author's created universe (or any author's universe) rise to the same level of "reality" as the universe we're familiar with. The theme is present in works as diverse as Myers' Silverlock and Heinlein’s Number of the Beast. Fletcher Pratt
Fletcher Pratt

Murray Fletcher Pratt was a science fiction and fantasy writer; he was also well-known as a writer on naval history and on the American Civil War....
 and L. Sprague de Camp
L. Sprague de Camp

Lyon Sprague de Camp, was an USA science fiction authors and fantasy authors and biographer. In a writing career spanning sixty years he wrote over one hundred books, including novels and notable works of nonfiction, such as biographies of other important fantasy authors....
 took the character Harold Shea in the Incompleat Enchanter
Harold Shea (fictional series)

The "Harold Shea" Stories is a name given to a series of five science fantasy stories by the collaborative team of L. Sprague de Camp and Fletcher Pratt and to its later continuation by de Camp alone, Christopher Stasheff, Holly Lisle, John Maddox Roberts, Roland J....
 series through the worlds of Norse myth, Edmund Spenser
Edmund Spenser

Edmund Spenser was an important England poet best known for The Faerie Queene, an epic poem celebrating, through fantastical allegory, the Tudor dynasty and Elizabeth I....
's Faerie Queene, Ludovico Ariosto
Ludovico Ariosto

Ludovico Ariosto was an Italians poet. He is best known as the author of the romance Epic poetry Orlando Furioso . The poem, a continuation of Matteo Maria Boiardo's Orlando Innamorato, describes the adventures of Charlemagne, Roland, and the Franks as they battle against the Saracen with divergents into many side plots....
's Orlando Furioso
Orlando Furioso

Orlando Furioso is an Italian literature romance epic poem by Ludovico Ariosto which has exerted a wide influence on later culture. The earliest version appeared in 1516, although the poem was not published in its complete form until 1532....
, and the Kalevala
Kalevala

The Kalevala is a book and Epic poetry which the Elias L?nnrot compiled from Finnish people and Karelian folklore in the nineteenth century....
— without ever quite settling whether writers created these parallel worlds by writing these works, or received impressions from the worlds and wrote them down. In an interlude set in "Xanadu
Kubla Khan

"Kubla Khan; or, A Vision in a Dream: A Fragment" is a Poetry by Samuel Taylor Coleridge, which takes its title from the Mongol Empire and China Chinese sovereign Kublai Khan of the Yuan Dynasty....
", a character claims that the universe is dangerous because the poem went unfinished, but whether this was his misapprehension or not is not established.

Some fictional approaches definitively establish the independence of the parallel world, sometimes by having the world differ from the book's account; other approaches have works of fiction create and affect the parallel world: L. Sprague de Camp
L. Sprague de Camp

Lyon Sprague de Camp, was an USA science fiction authors and fantasy authors and biographer. In a writing career spanning sixty years he wrote over one hundred books, including novels and notable works of nonfiction, such as biographies of other important fantasy authors....
's Solomon's Stone
Solomon's Stone

Solomon's Stone is a fantasy novel written by L. Sprague de Camp. It was first published in the fantasy magazine Unknown for June, 1942....
, taking place on an astral plane, is populated by the daydreams of mundane people, and in Rebecca Lickiss's Eccentric Circles, an elf is grateful to Tolkien for transforming elves from dainty little creatures. These stories often place the author, or authors in general, in the same position as Zelazny's characters in Amber. Questioning, in a literal fashion, if writing is an act of creating a new world, or an act of discovery of a pre-existing world.

Occasionally, this approach becomes self-referential, treating the literary universe of the work itself as explicitly parallel to the universe where the work was created. Stephen King
Stephen King

Stephen Edwin King is an United States author of contemporary horror fiction, fantasy fiction and science fiction.Having sold an estimated List of bestselling fiction authors of his books, King is best known for his work in horror fiction, in which he demonstrates a thorough knowledge of the genre's history....
's seven-volume Dark Tower
The Dark Tower (series)

The Dark Tower is a heptalogy written by American author Stephen King between 1970 and 2004. The series incorporates themes from multiple genres, including fantasy fiction, science fantasy, horror fiction and Western fiction elements....
 series hinges upon the existence of multiple parallel worlds, many of which are King's own literary creations. Ultimately the characters become aware that they are only "real" in King's literary universe, and even travel to a world — twice — in which (again, within the novel) they meet Stephen King and alter events in the real Stephen King's world outside of the books.

Elfland


Elfland
Álfheim

?lfheimr or Alfheim is the abode of the ?lfar "Elves" in Norse Mythology and appears also in northern English ballads under the forms Elfhame and Elphame, sometimes modernized as Elfland or Elfenland....
, or Faerie, the otherworldly home not only of elves
Elf

An elf is a creature of Germanic mythology. The elves were originally thought of as a race of minor nature and fertility deity, who are often pictured as youthful-seeming men and women of great beauty living in forests and underground places and caves, or in wells and springs....
 and fairies
Fairy

A fairy is a type of mythological being or legendary creature, a form of spirit, often described as spirit#Metaphysical and metaphorical uses, supernatural or preternatural....
 but goblin
Goblin

A goblin is an imaginary evil, crabby, and mischievous creature described as a grotesquely disfigured or gnome-like Wiktionary:phantom, that may range in height from that of a dwarf to that of a human....
s, troll
Troll

A troll is a fearsome member of a race of creatures from Norse mythology. Originally more or less the Nordic equivalents of giant , although often smaller in size, the different depictions have come to range from the fiendish giants ? similar to the ogres of England ? to a devious, more human-like folk of the wilderness, living underground...
s, and other folkloric creatures, has an ambiguous appearance in folklore.

On one hand, the land often appears to be continuous to ordinary land. Thomas the Rhymer
Thomas the Rhymer

Thomas Learmonth , better known as Thomas the Rhymer or True Thomas, was a 13th century Kingdom of Scotland laird and reputed prophet from Earlston ....
 might, on being taken by the Queen of Faerie, be taken on a road like one leading to Heaven or Hell.

This is not exclusive to English or French folklore. In Norse mythology
Norse mythology

Norse, Viking or Scandinavian mythology comprises the beliefs, myths and legends of the Norse paganism of the North Germanic language people, including those who settled on Faroe Islands and Iceland, where most of the written sources for Norse mythology were assembled....
, Elfland (Alfheim
Álfheim

?lfheimr or Alfheim is the abode of the ?lfar "Elves" in Norse Mythology and appears also in northern English ballads under the forms Elfhame and Elphame, sometimes modernized as Elfland or Elfenland....
) was also the name of what today is the Swedish province of Bohuslän
Bohuslän

is one of the 25 traditional non-administrative provinces of Sweden , situated on the west coast of the country. It borders Dalsland and V?sterg?tland as well as the Skagerrak arm of the North Sea and ?stfold in Norway....
. In the sagas, it said that the people of this petty kingdom were more beautiful than other people, as they were related to the elves, showing that not only the territory was associated with elves, but also the race of its people.

While sometimes folklore seems to show fairy intrusion into human lands — "Tam Lin
Tam Lin

Tam Lin is the hero of a folklore legend originating from the Scottish Borders with England. The story revolves around fairy and mortal men....
" does not show any otherworldly aspects about the land in which the confrontation takes place — at other times the otherworldly aspects are clear. Most frequently, time can flow differently for those trapped by the fairy dance than in the lands they come from; although, in an additional complication, it may only be an appearance, as many returning from Faerie, such as Oisín
Oisín

Ois?n , son of Fionn mac Cumhail and of Sadb , was regarded in legend as the greatest poet of Ireland, and a warrior of the fianna in the Ossianic or Fenian Cycle of Irish mythology....
, have found that time "catches up" with them as soon as they have contact with ordinary lands.

Fantasy writers have taken up the ambiguity. Some writers depict the land of the elves as a full-blown parallel universe, with portals the only entry — as in Josepha Sherman
Josepha Sherman

Josepha Sherman is an American author. In 1990 she won the Compton Crook Award for the novel The Shining Falcon....
's Prince of the Sidhe
Josepha Sherman

Josepha Sherman is an American author. In 1990 she won the Compton Crook Award for the novel The Shining Falcon....
 series or Esther Friesner
Esther Friesner

Esther Friesner is an United States science fiction and fantasy author best known for her humorous pieces. Friesner attended the Stuyvesant High School, a public magnet high school in New York, New York, as well as Vassar College....
's Elf Defense — and others have depicted it as the next land over, possibly difficult to reach for magical reasons — Hope Mirrlees
Hope Mirrlees

Hope Mirrlees was a United Kingdom translator, poet and novelist. She is best known for the 1926 Lud-in-the-Mist, a fantasy novel and influential classic, and for Paris: A Poem, a modernist poem which critic Julia Briggs deemed "modernism's lost masterpiece, a work of extraordinary energy and intensity, scope and ambition."...
's Lud-in-the-Mist
Lud-in-the-Mist

Lud-in-the-Mist is the third novel by Hope Mirrlees, and the only one still in print as of 2005. It continues the author's exploration of the themes of Life and Art, by a method already described in the preface of her first novel, Madeleine: One of Love's Jansenists : "to turn from time to time upon the action the fantastic limelight...
, or Lord Dunsany's The King of Elfland's Daughter
The King of Elfland's Daughter

The King of Elfland's Daughter is a 1924 fantasy novel written by Lord Dunsany. Written before the genre was named, it is considered to be among the pioneering works of modern fantasy....
. In some cases, the boundary between Elfland and more ordinary lands is not fixed. Not only the inhabitants but Faerie itself can pour into more mundane regions.

Other media


Television

The idea of parallel universes have received treatment in a number of television series, usually as a single story or episode in a more general science fiction
Science fiction

Science fiction is a broad genre of fiction that often involves speculations based on current or future science or technology. Science fiction is found in books, art, television, films, games, theatre, and other media....
 or fantasy
Fantasy

Fantasy is a genre that uses magic and other supernatural forms as a primary element of Plot , Theme , and/or Setting . Fantasy is generally distinguished from science fiction and horror by the expectation that it steers clear of technological and macabre themes, respectively, though there is a great deal of overlap between the three ....
 storyline.

The most widely known and imitated example is the original Star Trek
Star Trek: The Original Series

Star Trek is a science fiction television series created by Gene Roddenberry that aired from September 8, 1966 to September 2, 1969. Though the original series was titled simply Star Trek, it has acquired the retronym Star Trek: The Original Series to distinguish it from the spinoffs that followed, and from the Star Trek fi...
 episode entitled Mirror, Mirror. The episode introduced an alternative version of the Star Trek universe where the main characters were barbaric and cruel to the point of being evil. When the parallel universe concept is parodied
Parody

A parody , in contemporary usage, is a work created to mock, comment on, or poke fun at an original work, its subject, or author, or some other target, by means of humorous, satiric or ironic imitation....
, the allusion is often to this Star Trek episode. Another example is "Spookyfish
Spookyfish

"Spookyfish" is the 28th episode of Comedy Central's List of animated television series South Park. It was originally broadcast on October 28, 1998....
", an episode of South Park
South Park

South Park is an United Statesn animation situation comedy, notorious for its toilet humour, surrealism, and often black comedy, which satirizes Subject matter in South Park including religion, politics, violence, abuse, sexuality, and mental disorder....
, in which the "evil" universe double of Cartman (who is pleasant and agreeable, unlike the home universe's obnoxious Cartman) sports a beard, like the "mirror" version of Mr. Spock. Another animated series, Futurama
Futurama

Futurama is an Animated cartoon United States Situation comedy created by Matt Groening, and developed by Groening and David X. Cohen for the Fox Broadcasting Company....
, had an episode
The Farnsworth Parabox

?The Farnsworth Parabox? is the fifteenth episode of the fourth production season of Futurama. It first aired June 8, 2003 as the tenth episode in the fifth broadcast season....
 where the cast travels between "Universe A" and "Universe 1" via boxes containing each universe, and one of the major jokes is an extended argument between the two sets of characters over which set were the "evil" ones.

One of the earliest television plots to feature parallel time was a 1970 storyline on soap opera Dark Shadows
Dark Shadows

Dark Shadows is a Gothic Romanticism soap opera that originally aired weekdays on the American Broadcasting Company television network, from June 27, 1966 to April 2, 1971....
. Vampire Barnabas Collins found a room in Collinwood which served as a portal to parallel time, and he entered the room in order to escape from his current problems. A year later, the show again traveled to parallel time, the setting this time being 1841.

Multiple episodes of Red Dwarf
Red Dwarf

Red Dwarf is a United Kingdom science fiction television situation comedy Media franchise, primarily comprising eight series of a television sitcom that ran on BBC Two between 1988 and 1999 and gained a cult following....
 use the concept. In "Parallel Universe" the crew meet alternate versions of themselves: the analogues of Lister, Rimmer and Holly are female, while the Cat's alternate is a dog. "Dimension Jump" introduces a heroic alternate Rimmer, a version of whom reappears in "Stoke Me a Clipper". The next episode, "Ouroboros", makes contact with a timeline in which Kochanski, rather than Lister, was the sole survivor of the original disaster; this alternate Kochanski then joins the crew for the remaining episodes.

In "Rise of the Cybermen
Rise of the Cybermen

"Rise of the Cybermen" is an list of Doctor Who serials in the United Kingdom science fiction television series Doctor Who. The episode features the return of the Cyberman to the series, having last been seen in Silver Nemesis in 1988....
", an episode of Doctor Who
Doctor Who

Doctor Who is a British Science fiction on television programme produced by the BBC. The programme depicts the adventures of a mysterious alien Time travel known as "Doctor " who travels in his space and time-ship, the TARDIS, which normally appears from the exterior to be a blue 1950s police box....
, Rose Tyler
Rose Tyler

Rose Tyler is a fictional character played by Billie Piper in the long-running United Kingdom science fiction on television series Doctor Who, and was created by series producer Russell T Davies....
, The Doctor
Tenth Doctor

The Tenth Doctor is the tenth Doctor #Changing faces of the fictional character known as Doctor seen on screen in the long-running BBC Science fiction on television series Doctor Who....
 and Mickey Smith
Mickey Smith

Mickey Smith is a fictional character in the United Kingdom science fiction television series Doctor Who, played by Noel Clarke.Mickey is introduced as the boyfriend of the Ninth Doctor and Tenth Doctor's companion Rose Tyler, and a recurring character on the programme....
 accidentally travel to a parallel universe where Britain is a republic and Rose's father is alive; Rose and her mother are later stuck there permanently. In the earlier episode, "Inferno
Inferno (Doctor Who)

Inferno is a List of Doctor Who serials in the United Kingdom science fiction television series Doctor Who, which was first broadcast in seven weekly parts from May 9 to June 20, 1970....
", the Doctor accidentally travels to a parallel universe where Britain is a fascist republic.

Sometimes a television series will use parallel universes as an on-going subplot. Star Trek: Deep Space Nine
Star Trek: Deep Space Nine

Star Trek: Deep Space Nine is a science fiction television program that premiered in 1993 and ran for seven seasons, ending in 1999. Rooted in Gene Roddenberry?s Star Trek universe, it was created by Rick Berman and Michael Piller, at the request of Brandon Tartikoff, and produced by CBS Paramount Television....
 and Star Trek: Enterprise
Star Trek: Enterprise

Enterprise, retitled Star Trek: Enterprise at the start of its third season, was a science fiction television program created by Brannon Braga and Rick Berman and set in the Star Trek universe created by Gene Roddenberry....
 elaborated on the premise of the original series' "Mirror" universe and developed multi-episode story arcs based on the premise. Other examples are the science fiction series Stargate SG-1
Stargate SG-1

Stargate SG-1 is an United States-Canadian science fiction television series, part of the Stargate. Its story begins one year after the events of the 1994 science fiction film Stargate ....
, the fantasy/horror series Buffy the Vampire Slayer, Supernatural
Supernatural

The term supernatural or supranatural pertains to an order of existence beyond the scientifically visible universe. Religious miracles are typically supernatural claims, as are Spell and curses, divination, the belief that there is an afterlife for the dead, and innumerable others....
 and the romance/fantasy Lois & Clark: The New Adventures of Superman
Lois & Clark: The New Adventures of Superman

Lois & Clark: The New Adventures of Superman is a live-action United States television program based on the Superman comic books. Lois & Clark aired on American Broadcasting Company from September 12, 1993 to June 14, 1997, and starred Dean Cain as Superman/Clark Kent and Teri Hatcher as Lois Lane....
. Following the precedent set by Star Trek these story arcs show alternative universes that have turned out "worse" than the "original" universe: in Stargate SG-1 the first encountered parallel reality featured Earth being overwhelmed by an unstoppable Goa'uld onslaught; in Buffy, two episodes concern a timeline in which Buffy came to Sunnydale
Sunnydale

Sunnydale, California, is the fictional setting for the U.S. television drama Buffy the Vampire Slayer . Series creator Joss Whedon conceived the town as a representation of a generic California city, as well as a narrative parody of the all-too-serene towns typical in traditional horror movies....
 too late to stop the vampires from taking control; Lois & Clark repeatedly visits an alternative universe where Clark Kent
Clark Kent

Clark Joseph Kent is a fictional character created by Joe Shuster and Jerry Siegel. He serves as the civilian and secret identity of the superhero Superman....
's adoptive parents, Jonathan and Martha Kent, died when he was ten years of age, and Lois Lane
Lois Lane

Lois Joanne Lane-Kent is the primary love interest of Superman in the DC Comics? Superman stories. Created by writer Jerry Siegel and artist Joe Shuster, she First appearance in Action Comics #1 ....
 is also apparently dead. Clark eventually becomes Superman, with help from the 'original' Lois Lane, but he is immediately revealed as Clark Kent and so has no life of his own.

In addition to following Star Trek's lead, showing the "evil" variants of the main storyline gives the writers an opportunity to show what is at stake by portraying the worst that could happen and the consequences if the protagonists fail or the importance of a characters presence. The latter could also be seen as the point of the alternative reality portrayed in the movie It's a Wonderful Life
It's a Wonderful Life

It's a Wonderful Life is an United States film produced and directed by Frank Capra and loosely based on the short story "The Greatest Gift " written by Philip Van Doren Stern....
 (see below).

There have been relatively few series where parallel universes were central to the series itself. Two examples are the short-lived 1980s series Otherworld
Otherworld (TV series)

Otherworld was a short-lived science fiction TV series that aired for only eight episodes in 1985 on CBS. It was created by Roderick Taylor as a sort of Lost in Space on Earth....
 which transported a family from our world to an alternative Earth; and Sliders
Sliders

Sliders is an United States science fiction television program that ran for five seasons from 1995 in television to 2000 in television. The series focuses on a group of travellers who "slide" between Parallel universe by use of a wormhole referred to as an "Sliders#Vortex."...
, where the characters travel across a series of "alternative" Earths, trying to get back to their home universe. In 1986, Disney produced a pilot episode for an animated children's show about interdimensional travel called Fluppy Dogs.

Movies

The most famous treatment of the alternative universe concept in film could be considered the The Wizard of Oz
The Wizard of Oz (1939 film)

The Wizard of Oz is a 1939 in film Cinema of the United States musical film-fantasy film mainly directed by Victor Fleming and based on the 1900 Children's literature novel The Wonderful Wizard of Oz by L....
, which portrays a parallel world, famously separating the magical realm of the Land of Oz
Land of Oz

Oz is a fairy country containing four lands under the rule of high king.It was first introduced in The Wonderful Wizard of Oz by L. Frank Baum, one of many fairy countries that he created for his books....
 from the mundane world by filming it in Technicolor
Technicolor

Technicolor is the trademark for a series of Color film processes pioneered by Technicolor Motion Picture Corporation , now a division of Thomson SA....
 while filming the scenes set in Kansas
Kansas

The State of Kansas is a Midwestern U.S. state in the Central United States of the United States of America, an area often referred to as the United States "Heartland"....
 in sepia.

A later example is the Frank Capra
Frank Capra

'Frank Russell Capra' was an Italian-American film director and a major creative force behind a number of highly popular films of the 1930s and 1940s, including It's a Wonderful Life and Mr....
 movie, It's a Wonderful Life
It's a Wonderful Life

It's a Wonderful Life is an United States film produced and directed by Frank Capra and loosely based on the short story "The Greatest Gift " written by Philip Van Doren Stern....
 where the main character George Bailey
George Bailey (fictional character)

George Bailey is a fictional character in Frank Capra's 1946 film It's a Wonderful Life. He is played by James Stewart . He is loosely based on George Pratt, a character in Philip Van Doren Stern's The Greatest Gift ....
 is shown by a guardian angel the city of Pottersville
Pottersville

Pottersville is the creation of the guardian angel Clarence Odbody and other angels in Heaven to show George Bailey what the world would have been like had George never been born, in the 1946 Frank Capra film It's a Wonderful Life....
, which was George Bailey's hometown of Bedford Falls as it would have been if he had never existed. Another notable depiction of a parallel universe in movies is the second film in the Back to the Future
Back to the Future

Back to the Future is a 1985 science fiction film adventure film directed by Robert Zemeckis, co-written by Bob Gale and produced by Steven Spielberg....
 trilogy
Trilogy

A trilogy is a set of three works of art, usually literature, film, or video games, that are connected and can be seen either as a single work or three individual works....
 (1985, 1989) by Robert Zemeckis
Robert Zemeckis

Robert Lee "Bob" Zemeckis is an Academy Award- and Golden Globe-winning American film director, Film producer and screenwriter. Zemeckis first came to public attention in the 1980s as the director of the comedic time-travel Back to the Future trilogy films as well as the live-action/animated film Who Framed Roger Rabbit , though in t...
, starring Michael J. Fox
Michael J. Fox

Michael J. Fox is a Canadian American actor. His roles include Marty McFly from the Back to the Future trilogy trilogy ; Alex P. Keaton from Family Ties , for which he won four Emmy Awards and a Golden Globe Award; and Mike Flaherty from Spin City , for which he won an Emmy, three Golden Globes, and two Screen Actors Guild Awar...
 and Christopher Lloyd
Christopher Lloyd

Christopher Allen Lloyd is a three-time Emmy Award-winning United States actor known for his gruff eloquent voice. He is of Wales ancestry and is well known for his roles as Emmett Brown in the Back to the Future trilogy, Judge Doom in Who Framed Roger Rabbit, Uncle Fester in The Addams Family and Addams Family Values, as well a...
, showing an accidentally created
Point of divergence

In discussion of counterfactual history, a divergence point , also referred to as a departure point or point of divergence is a historical event, with two possible postulated outcomes....
 alternative present and future
Alternate future

In science fiction stories involving time travel, an alternate future or alternative future is a possible future which never comes to pass, typically because someone travels back into the past and alters it so that the events of the alternate future cannot occur....
. Like It's a Wonderful Life, The Big Time, and many other time travel stories using this conceit, it is clear that these alternative presents/futures are mutually exclusive with the protagonists' own — so, strictly speaking, the universes aren't parallel in that they cannot co-exist, rather they oscillate between one or the other.

Another common use of the theme is as a prison for villains or demons. The idea is used in the first two Superman movies starring Christopher Reeve
Christopher Reeve

Christopher D'Olier Reeve was an American actor, film director, film producer, and screenwriter. He established himself early as a The Juilliard School-trained stage actor before portraying Superman in four films, from 1978 to 1987....
 where Kryptonian
Krypton (comics)

Krypton is a fictional planet in the DC Comics DC Universe, and the native world of the super-heroes Superman and, in some tellings, Supergirl , and Krypto the "super dog"....
 villains were sentenced to the Phantom Zone
Phantom Zone

The Phantom Zone is a fictional prison dimension featured in the Superman comic books and related media. It first appeared in Adventure Comics #283 ....
 from where they eventually escaped. An almost exactly parallel use of the idea is presented in the campy cult film The Adventures of Buckaroo Banzai Across the 8th Dimension
The Adventures of Buckaroo Banzai Across the 8th Dimension

The Adventures of Buckaroo Banzai Across the 8th Dimension! is an Cinema of the United States science fiction film that has reached cult film status....
, where the "8th dimension" is essentially a "phantom zone" used to imprison the villainous Red Lectroids. Uses in horror films include the 1986 film From Beyond
From Beyond (film)

From Beyond is a horror film directed by Stuart Gordon and released in 1986. From Beyond was Gordon's second H. P. Lovecraft adaptation, based on the From Beyond of the same name, and was written by Dennis Paoli, Gordon and Brian Yuzna ....
 (based on the H. P. Lovecraft
H. P. Lovecraft

Howard Phillips Lovecraft was an United States author of horror fiction, fantasy fiction, and science fiction, known then simply as weird fiction....
 story
From Beyond (short story)

"From Beyond" is a short story by science fiction and horror fiction writer H. P. Lovecraft. It was written in 1920 in literature and was first published in The Fantasy Fan in June 1934 in literature ....
 of the same name) where a scientific experiment induces the experimenters to perceive aliens
Extraterrestrial life in popular culture

In popular cultures, life forms--especially intelligent life forms, that are of extraterrestrial life, i.e. not coming from the Earth--are referred to collectively as Extraterrestrial lifes, or sometimes visitors....
 from a parallel universe, with bad results. The 1987 John Carpenter
John Carpenter

John Howard Carpenter is an United States film director, screenwriter, Film producer, composer and occasional actor. Although Carpenter has worked in numerous film genres, his name is most commonly associated with horror film and science fiction film....
 film Prince of Darkness
Prince of Darkness (film)

Prince of Darkness is a 1987 in film Cinema of the United States horror film film director, written and scored by John Carpenter. The film is the second installment in what Carpenter refers to as his "Apocalypse Trilogy", which began with The Thing and concludes with In the Mouth of Madness....
 is based on the premise that the Christian
Christian

A Christian is a person who adheres to Christianity, a Monotheism#Christian view religion centered on the life and teachings of Jesus and interpreted by Christians to have been prophesied in the Hebrew Bible/Old Testament....
 Satan
Satan

Satan is a term that originates from the Abrahamic religions, being traditionally applied to an angel in Judeo-Christian belief, and to a Genie in Islamic belief....
 is actually an alien being that is the son of something even more evil and powerful, trapped in another universe. The protagonists accidentally free "Satan", who then attempts to release his "father."

Some films present parallel realities that are actually different contrasting versions of the narrative itself. Commonly this motif is presented as different points of view revolving around a central (but sometimes unknowable) "truth", the seminal example being Akira Kurosawa
Akira Kurosawa

was a prominent Japanese people filmmaker, film producer, screenwriter and film editing. His first credited film as director, , was released in 1943, his last as director, , in 1993....
's Rashomon
Rashomon (film)

is a 1950 in film Cinema of Japan directed by Akira Kurosawa, working in close collaboration with cinematographer Kazuo Miyagawa. It stars Toshiro Mifune, Takashi Shimura, Machiko Kyo, Masayuki Mori and Minoru Chiaki....
. Conversely, often in film noir
Film noir

Film noir is a film term used primarily to describe stylish cinema of the United States Crime film, particularly those that emphasize moral ambiguity and sexual motivation....
 and crime dramas
Crime film

A crime film, in the most general sense, is a film that involves various aspects crime and the criminal justice system. Stylistically, it can fall under many different genres, most commonly drama, Thriller , Mystery fiction and film noir....
, the alternative narrative is a fiction created by a central character, intentionally — as in The Usual Suspects
The Usual Suspects

The Usual Suspects is a 1995 Cinema of the United States neo-noir film written by Christopher McQuarrie and directed by Bryan Singer. The film tells the story of Roger "Verbal" Kint , a small-time Confidence trick who is the subject of a police interrogation....
 — or unintentionally — as in Angel Heart
Angel Heart

Angel Heart is a 1987 in film Mystery film-Thriller written and directed by Alan Parker, and starring Mickey Rourke, Robert De Niro and Lisa Bonet....
. Less often, the alternative narratives are given equal weight in the story, making them truly alternative universes, such as in the German
Germany

Germany , officially the Federal Republic of Germany , is a country in Central Europe. It is bordered to the north by the North Sea, Denmark, and the Baltic Sea; to the east by Poland and the Czech Republic; to the south by Austria and Switzerland; and to the west by France, Luxembourg, Belgium, and the Netherlands....
 film Run Lola Run
Run Lola Run

Run Lola Run is a 1998 in film Cinema of Germany written and directed by Tom Tykwer, and starring Franka Potente as Lola and Moritz Bleibtreu as Manni....
, the short-lived British West End
West End theatre

West End theatre is a popular term for mainstream professional theatre staged in the large theatres of London's "Theatreland". Along with New York City's Broadway theatre, West End theatre is usually considered to represent the highest level of commercial theatre in the English language world....
 musical Our House
Our House

Our House may refer to:In music:* Our House , a song by the band Madness* Our House , a musical based on the songs of the band Madness...
 and the British
Great Britain

Great Britain is an island lying to the northwest of Continental Europe. It is the List of islands by area, and the largest in Europe. With a population of 58.9 million people it is List of islands by population....
 film Sliding Doors
Sliding Doors

Sliding Doors is a 1998 in film film written and directed by Peter Howitt. It starred Gwyneth Paltrow and John Hannah , and featured John Lynch , Jeanne Tripplehorn and Virginia McKenna....
.

Recent films that have more explicitly explored parallel universes are: the 2001 cult movie Donnie Darko
Donnie Darko

Donnie Darko is a 2001 in film Cult film psychological thriller film written and directed by Richard Kelly , and starring Jake Gyllenhaal, Jena Malone, and Mary McDonnell....
, which deals with what it terms a "tangent universe" that erupts from our own universe; Super Mario Bros.
Super Mario Bros. (film)

name = Super Mario Bros.|image = Supermariobros.jpg|director = Rocky MortonAnnabel JankelRoland Joff? |writer = Parker BennettTerry RunteEd Solomon...
 (1993) has the eponymous heroes cross over into a parallel universe ruled by humanoids who evolved from dinosaurs; The One
The One (film)

The One is a 2001 in film action film, directed by James Wong, director of Final Destination, and starring Jet Li, Jason Statham and Carla Gugino....
 (2001) starring Jet Li
Jet Li

Li Lianjie , better known by his stage name Jet Li, is a China Chinese martial arts, actor, Wushu champion, and international film film star....
, in which there is a complex system of realities in which Jet Li's character is a police officer in one universe and a serial killer in another, who travels to other universes to destroy versions of himself, so that he can become 'the one'; and FAQ: Frequently Asked Questions
FAQ: Frequently Asked Questions

FAQ: Frequently Asked Questions is a feature-length dystopia movie, written and directed by Carlos Atanes and released in 2004....
 (2004), the main character runs away from a totalitarian nightmare, and he enters into a cyber-afterlife alternative reality.

Comic books

Parallel universes in modern comics have become particularly rich and complex, in large part due to the continual problem of continuity
Continuity (fiction)

In fiction, continuity is consistency of the characteristics of persons, plot , objects, places and events seen by the reader or viewer. It is of relevance to several mass media....
 faced by the major two publishers, Marvel Comics
Marvel Comics

Marvel Comics is an American comic book and related media company owned by Marvel Publishing, Inc., a subsidiary of Marvel Entertainment, Inc. Marvel counts among as its List of Marvel Comics characters such well-known properties as Captain America, the Fantastic Four, the Hulk , Iron Man, Spider-Man, the X-Men, and many others....
 and DC Comics
DC Comics

DC Comics is one of the largest and most popular American comic book and related media companies, along with Marvel Comics. A subsidiary of Warner Bros....
. The two publishers have used the multiverse
Multiverse (science)

The multiverse is the hypothetical set of multiple possible universes that together comprise all of reality. The different universes within the multiverse are sometimes called parallel universes....
 concept to fix problems arising from integrating characters from other publishers into their own canon, and from having major serial
Serial (literature)

The term "serial" refers to the intrinsic property of a succession — namely, its sequence. In literature, the term is used as a noun to refer to a format by which a story is told in contiguous installments in sequential issues of a single periodical publication....
 protagonists having continuous histories lasting, as in the case of Superman
Superman

Superman is a Character , a comic book superhero widely considered to be an American cultural icon. Created by American writer Jerry Siegel and Canadian-born artist Joe Shuster in 1932 while both were living in Cleveland, Ohio, Ohio, and sold to DC Comics in 1938, the character first appeared in Action Comics Action Comics 1 and subseque...
, over 70 years. Additionally, both publishers have used new alternative universes to re-imagine their own characters. (See Multiverse (DC Comics)
Multiverse (DC Comics)

The DC Multiverse is a fictional Continuity construct that exists in stories published by comic book company DC Comics. The DC Multiverse consists of List of DC Multiverse worlds outside DC's main continuity allowing writers the creative freedom to explore alternate versions of characters and their histories without contradicting and/or per...
 and Multiverse (Marvel Comics)
Multiverse (Marvel Comics)

Within Marvel Comics, most tales take place within the fictional Marvel Universe, which in turn is part of a larger Parallel universe . Starting with issues of Captain Britain, the main Continuity in which most Marvel storylines take place was designated Earth-616, and the multiverse was established as being protected by Merlyn ....
)

Because of this, comic books in general are one of the few entertainment mediums where the concept of parallel universes are a major and ongoing theme. DC in particular periodically revisits the idea in major crossover
Fictional crossover

A fictional crossover is the placement of two or more otherwise discrete fictional fictional character, Setting s, or fictional universe into the context of a single Narrative....
 storylines, such as Crisis on Infinite Earths
Crisis on Infinite Earths

Crisis on Infinite Earths is a 12-issue American comic book limited series and Fictional crossover event, produced by DC Comics in 1985 to simplify their then-55-year-old Continuity ....
 and Infinite Crisis
Infinite Crisis

Infinite Crisis is a seven-issue limited series of comic books written by Geoff Johns and illustrated by Phil Jimenez, George P?rez, Ivan Reis, and Jerry Ordway....
, where Marvel has a series called What If...
What If (comics)

What If, sometimes rendered as What If...?, is the title of several comic book series published by Marvel Comics, exploring "the road not traveled" by its various characters....
 that's devoted to exploring alternative realities, which sometimes impact the "main" universe's continuity.

Recently DC Comics series 52
52 (comic book)

52 was a weekly American comic book limited series published by DC Comics that debuted on May 10, 2006, one week after the conclusion of the seven-issue Infinite Crisis....
 heralded the return of the Multiverse. 52 was a mega-crossover event tied to Infinite Crisis which was the sequel to the 1980s Crisis on Infinite Earths. The aim was to yet again address many of the problems and confusions brought on by the Multiverse in the DCU. Now 52 Earths exist and including some Elseworld tales such as Kingdom Come
Kingdom Come (comic book)

Kingdom Come is a four-issue comic book limited series published in 1996 in comics by DC Comics. It was written by Mark Waid and painted in gouache by Alex Ross, who also developed the concept from an original idea ....
, DC's imprint
Imprint

In the publishing industry, an imprint can refer to two different things:* It can mean a brand name under which a work is published. One single publishing company may have multiple imprints; the different imprints are used by the publisher to marketing the work to different demographic consumer market segment....
 Wildstorm Comics
Wildstorm

WildStorm Productions, or simply WildStorm, publishes American comic books. Originally an independent company created by Jim Lee and further expanded upon in subsequent years by other creators, WildStorm became a publishing imprint of DC Comics in 1999....
 and an Earth devoted to the Charlton Comics
Charlton Comics

Charlton Comics was an United States comic book publishing company that existed from 1946 to 1986, having begun under a different name in 1944....
 heroes of DC. Countdown and Countdown Presents: The Search for Ray Palmer and the upcoming Tales of the Multiverse stories expand upon this new Multiverse.

Marvel has also had many large crossover events which depicted an alternative universe, many springing from events in the X-Men
X-Men

The X-Men are a fictional superhero team in the . In the series, Professor Xavier responds to anti-Mutant prejudice by creating a haven at his Westchester County, New York mansion to train young mutants to use their powers for the benefit of humanity....
 books, such as Days of Future Past
Days of Future Past

"Days of Future Past" is a popular storyline in the Marvel Comics comic book The Uncanny X-Men issues #141 and #142, published in 1981. It deals with a dystopian alternate future in which mutants are incarcerated in Internment#Internment camps....
, the seminal Age Of Apocalypse
Age of Apocalypse

"Age of Apocalypse" is a comic book fictional crossover storyline published in the X-Men franchise of books by Marvel Comics. Although occurring in the Multiverse #Alternate universes of Earth-295, it has often had ramifications in the universe of Earth-616, the main Marvel Comics universe....
, and 2006's House Of M
House of M

House of M is an eight-issue comic book limited series and fictional crossover storyline published by Marvel Comics in 2005 in comics. Written by Brian Michael Bendis, and illustrated by Olivier Coipel, its first issue debuted in June 2005, as a follow-up to the events of the Planet X and Avengers Disassembled storylines, in whic...
. In addition the Squadron Supreme
Squadron Supreme

The Squadron Supreme is a team of fictional fictional character and superheroes that appear in comic books published by Marvel Comics. The team first appeared in Avengers #85-86....
 is a DC inspired Marvel Universe that has been used several times, often crossing over into the mainstream Universe in the Avengers
Avengers (comics)

The Avengers is a team of fictional characters superhero characters in comic books published by Marvel Comics. Originally created using preexisting Marvel characters, variously created by writer-editor Stan Lee, artist and co-plotter Jack Kirby and others, the team first appearance in The Avengers #1 ....
 comic. Exiles
Exiles (Marvel Comics)

The Exiles are a group of fictional characters that feature in two Marvel Comics series, Exiles and New Exiles. The Exiles consists of characters from different dimensions, or realities, which have been removed from time and space in order to correct problems in various alternate worlds and divergent timelines in the Multiverse ....
 is an offshoot of the X-Men
X-Men

The X-Men are a fictional superhero team in the . In the series, Professor Xavier responds to anti-Mutant prejudice by creating a haven at his Westchester County, New York mansion to train young mutants to use their powers for the benefit of humanity....
 franchsie that allows characters to hop from one alternative reality to another, leaving the original, main Marvel Universe
Marvel Universe

The Marvel Universe is the universe where the stories published by Marvel Comics take place.The Marvel Universe actually exists within a Multiverse consisting of thousands of separate universes, all of which are the creations of Marvel Comics and all of which are, in a sense, "Marvel universes"....
 intact. The Marvel UK
Marvel UK

Marvel UK was an imprint of Marvel Comics formed in 1972 in comics to reprint United States of America produced stories for the United Kingdom weekly comic market, though it later did produce original material by British creators such as Alan Moore, John Wagner, Dave Gibbons, Steve Dillon and Grant Morrison....
 line has long had multiverse stories including the Jaspers' Warp
Jaspers' Warp

Jaspers' Warp, also known as Crooked World, was a Marvel UK storyline featuring primarily the character Captain Britain. It was originally published between 1982 in comics and 1984 in comics in The Mighty World Of Marvel, #387-388, The Daredevils, #1-11 and The Mighty World Of Marvel, volume 2, #7-13....
 storyline of Captain Britain
Captain Britain

Captain Britain , briefly known as Britannic, is a fictional character, a superhero appearing in the comic books published by Marvel Comics....
's first series (it was here that the designation Earth-616
Earth-616

In the fictional Multiverse , Earth-616 or Earth 616 is the name used to identify the primary Continuity in which most Marvel Comics titles take place....
 was first applied to the mainstream Marvel Universe
Marvel Universe

The Marvel Universe is the universe where the stories published by Marvel Comics take place.The Marvel Universe actually exists within a Multiverse consisting of thousands of separate universes, all of which are the creations of Marvel Comics and all of which are, in a sense, "Marvel universes"....
).

Marvel Comics, as of 2000, launched their most popular parallel universe, the Ultimate Universe
Ultimate Universe

Ultimate Universe may refer to:* Ultimate Marvel* Ultimate Universe ...
. It is a smaller subline to the mainstream titles and features Ultimate Spider-Man
Ultimate Spider-Man

Ultimate Spider-Man is a superhero comic book series published by Marvel Comics. The series is a modernized re-imagining of Marvel's long-running Spider-Man comic book franchise as part of its Ultimate Marvel imprint....
, Ultimate X-Men
Ultimate X-Men

Ultimate X-Men is a superhero comic book series published by Marvel Comics since 2001. The series is a modernized re-imagining of Marvel's long-running X-Men comic book franchise as part of its Ultimate Marvel imprint....
, Ultimate Fantastic Four
Ultimate Fantastic Four

Ultimate Fantastic Four is a superhero comic book series published by Marvel Comics. The series is a modernized re-imagining of Marvel's long-running Fantastic Four comic book franchise as part of its Ultimate Marvel imprint....
 and the Ultimates
Ultimates

The Ultimates is a fictional group of superheroes that appear in comic books published by Marvel Comics. The team was created by writer Mark Millar and artist Bryan Hitch, and first appeared in The Ultimates #1 , as part of the company's Ultimate Marvel imprint....
 (their "Avengers"). The line in many ways both inspired and was inspired by aspects of the new movie franchises in addition to creating younger versions of the modern heroes.

See also

  • List of fiction employing parallel universes
    List of fiction employing parallel universes

    The following is a list of fiction employing parallel universe ...
  • Alternative universe (fan fiction)
    Alternative universe (fan fiction)

    An alternative universe fan fiction , commonly abbreviated as AU, is a type or form of fan fiction in which canon facts of setting or characterization in the universe being explored or written about are deliberately changed....
  • Imaginary world
    Imaginary world

    An imaginary world is a #Settings, #Places or #Events or scenarios at variance with objective reality, ranging from the voluntary suspension of disbelief of fictional universes and the socially constructed reality consensus reality of the "Imaginary ", to parallel universe resulting from disinformation, misinformation or Imagination specula...
  • Pantheistic solipsism
    Pantheistic solipsism

    Pantheistic solipsism is a technical term that has been advanced for the World as Myth idea proposed by science fiction writer Robert A. Heinlein in several of his books and stories, although the concept has little in common with either pantheism or solipsism ....


Further reading




External links

  • (pdf)