Action game
Encyclopedia
Action game is a video game genre that emphasizes physical challenges, including hand–eye coordination and reaction-time. The genre includes diverse subgenres such as fighting game
Fighting game
Fighting game is a video game genre where the player controls an on-screen character and engages in close combat with an opponent. These characters tend to be of equal power and fight matches consisting of several rounds, which take place in an arena. Players must master techniques such as...

s, shooter game
Shooter game
Shooter games are a sub-genre of action game, which often test the player's speed and reaction time. It includes many subgenres that have the commonality of focusing "on the actions of the avatar using some sort of weapon. Usually this weapon is a gun, or some other long-range weapon". A common...

s, and platform game
Platform game
A platform game is a video game characterized by requiring the player to jump to and from suspended platforms or over obstacles . It must be possible to control these jumps and to fall from platforms or miss jumps...

s, which are widely considered the most important action games, though some real-time strategy
Real-time strategy
Real-time strategy is a sub-genre of strategy video game which does not progress incrementally in turns. Brett Sperry is credited with coining the term to market Dune II....

 games are also considered to be action games.

In an action game, the player typically controls the avatar
Avatar (computing)
In computing, an avatar is the graphical representation of the user or the user's alter ego or character. It may take either a three-dimensional form, as in games or virtual worlds, or a two-dimensional form as an icon in Internet forums and other online communities. It can also refer to a text...

 of a protagonist
Protagonist
A protagonist is the main character of a literary, theatrical, cinematic, or musical narrative, around whom the events of the narrative's plot revolve and with whom the audience is intended to most identify...

. The avatar must navigate a game level
Level design
Level design, environment design or game mapping is a discipline of game development involving creation of video game levels—locales, stages, or missions. This is commonly done using level editor, a game development software designed for building levels; however some games feature built-in...

, collecting objects, avoiding obstacles, and battling enemies with various attacks. At the end of a level or group of levels, the player must often defeat a large boss enemy that is larger and more challenging than other enemies. Enemy attacks and obstacles deplete the avatar's health and lives
1-up
1-up , pronounced "one up", is a term in console video gaming that commonly refers to an item that gives the player an extra life, to complete the game. In certain games, it is possible to receive multiple extra lives at once...

, and the game is over when the player runs out of lives. Alternatively, the player wins the game by finishing a sequence of levels. But many action games are unbeatable and have an indefinite number of levels, and the player's only goal is to maximize their score by collecting objects and defeating enemies.

Defining elements

The action genre includes any game where the majority of challenges are physical tests of skill. Action games can sometimes incorporate other challenges such as races, puzzles, or collecting objects, but they are not central to the genre. Players may also encounter tactical and exploration challenges, but these games first-and-foremost require high reaction speed and good hand–eye coordination. The player is often under time pressure, and there is not enough time for complex strategic planning. In general, faster action games are more challenging. Action games may sometimes involve puzzle solving, but they are usually quite simple because the player is under immense time pressure.

Levels

Players advance through an action game by completing a series of levels
Level design
Level design, environment design or game mapping is a discipline of game development involving creation of video game levels—locales, stages, or missions. This is commonly done using level editor, a game development software designed for building levels; however some games feature built-in...

. Levels are often grouped by theme, with similar graphics and enemies. Each level involves a variety of challenges, whether dancing in a dance game or shooting things in a shooter, which the player must overcome to win the game. Older games force players to restart a level after dying, although action games evolved to offer saved games and checkpoints to allow the player to restart partway through a level. Increasingly, though, some games allow for 'resurrection' or 'cloning' and the opportunity to regain lost items upon death for a certain sum of ingame currency, typically increasing exponentially the more times the player dies. The obstacles and enemies in a level do not usually vary between play sessions, allowing players to learn by trial and error. However, levels sometimes add an element of randomness, such as an enemy that randomly appears or that takes an unpredictable path.

Levels in an action game may be linear or nonlinear, and sometimes include shortcuts. For levels that require exploration, the player may need to search for a level exit that is hidden or guarded by enemies. Such levels can also contain secrets—hidden or hard-to-reach objects or places that contain something valuable. The prize can be a bonus (see below) or a non-standard exit that allows a player to access a hidden level, or jump ahead several levels. Action games sometimes offer a teleporter that will cause the player's avatar to re-appear somewhere else in the same level. Levels often make use of locked doors that can only be opened with a specific key found somewhere else in the level.

Action games sometimes make use of time restrictions to increase the challenge. However, game levels typically do not react to time passing, and day/night cycles are rare. When the timer expires, the player typically loses a life, although some games generate a difficult enemy or challenge. If the level is completed with time remaining, this usually adds to the player's score.

Character abilities

In most action games, the player controls a single avatar
Avatar (computing)
In computing, an avatar is the graphical representation of the user or the user's alter ego or character. It may take either a three-dimensional form, as in games or virtual worlds, or a two-dimensional form as an icon in Internet forums and other online communities. It can also refer to a text...

 as the protagonist
Protagonist
A protagonist is the main character of a literary, theatrical, cinematic, or musical narrative, around whom the events of the narrative's plot revolve and with whom the audience is intended to most identify...

. The avatar has the ability to navigate and maneuver, and often collects or manipulates objects. They have a range of defenses and attacks, such as shooting or punching. Many action games make use of a powerful attack that destroys all enemies within a limited range, but this attack is rare.

Players may find a power-up
Power-up
In computer and video games, power-ups are objects that instantly benefit or add extra abilities to the game character as a game mechanic. This is in contrast to an item, which may or may not have a benefit and can be used at a time chosen by the player...

 within the game world that grants temporary or permanent improvements to their abilities. For example, the avatar may gain an increase in speed, more powerful attacks, or a temporary shield from attacks. Some action games even allow players to spend upgrade points on the power ups of their choice. In action games, most of the avatar's character development comes from power-ups and new moves, and mental states do not usually change or progress.

Obstacles and enemies

In action games that involve navigating a space, players will encounter obstacles, traps, and enemies. Enemies typically follow fixed patterns and attack the player, although newer action games may make use of more complex artificial intelligence
Artificial intelligence
Artificial intelligence is the intelligence of machines and the branch of computer science that aims to create it. AI textbooks define the field as "the study and design of intelligent agents" where an intelligent agent is a system that perceives its environment and takes actions that maximize its...

 to pursue the player. Enemies sometimes appears in groups or waves, with enemies increasing in strength and number until the end of the level. Enemies may also appear out of thin air. This can involve an invisible spawn point, or a visible generator which can be destroyed by the player. These points may generate enemies indefinitely, or only up to a certain number. At the end of a level or group of themed levels, players often encounter a boss
Boss (video games)
A boss is an enemy-based challenge which is found in video games. A fight with a boss character is commonly referred to as a boss battle or boss fight...

. This boss enemy will often resemble a larger or more difficult version of a regular enemy. A boss may require a special weapon or attack method, such as striking when the boss opens their mouth.

Health and lives

In many action games, the avatar has a certain amount of hitpoints or health, which are depleted by enemy attacks and other hazards. Sometimes health can be replenished by collecting an in-game object. When the player runs out of health, the player dies. The player's avatar is often given a small number of chances to retry after death, typically referred to as lives
1-up
1-up , pronounced "one up", is a term in console video gaming that commonly refers to an item that gives the player an extra life, to complete the game. In certain games, it is possible to receive multiple extra lives at once...

. Upon beginning a new life, the player resumes the game either from the same location they died, a checkpoint, or the start of the level. Upon starting a new life, the avatar is typically invincible for a few seconds to allow the player to re-orient themselves. Players may earn extra lives by reaching a certain score or by finding an in-game object. Arcade games still limit the number of player lives, while console and computer games have shifted more and more to unlimited lives.

Graphics and interface

Action games take place in either 2D or 3D from a variety of perspectives. 2D action games typically use a side view or top-down view. The screen frequently scrolls as the player explores the level, although many games scroll through the level automatically to push the player forward. In 3D action games, the perspective is usually tied to the avatar from a first-person or third-person perspective. However, some 3D games offer a context-sensitive perspective that is controlled by an artificial intelligence
Artificial intelligence
Artificial intelligence is the intelligence of machines and the branch of computer science that aims to create it. AI textbooks define the field as "the study and design of intelligent agents" where an intelligent agent is a system that perceives its environment and takes actions that maximize its...

 camera. Most of what the player needs to know is contained within a single screen, although action games frequently make use of a heads-up display
HUD (video gaming)
In video gaming, the HUD is the method by which information is visually relayed to the player as part of a game's user interface...

 that display important information such as health or ammunition. Action games sometimes make use of maps which can be accessed during lulls in action, or a mini-map that is always visible.

Scoring and victory

Action games tend to set simple goals, and reaching them is obvious. A common goal is to defeat the end-of-game boss. This is often presented in the form of a structured story, with a happy ending upon winning the game. In some games, the goal changes as the player reveals more of the story.

Many action games keep track of the player's score. Points are awarded for completing certain challenges, or defeating certain enemies. Skillful play is often rewarded with point multipliers, such as in Pac-Man where each ghost that the avatar eats will generate twice as many points as the last. Sometimes action games will offer bonus objects that increase the player's score. There is no penalty for failing to collect them, although these bonus objects may unlock hidden levels or special events. In many action games, achieving a high score is the only goal, and levels increase in difficulty until the player loses. Arcade games are more likely to be unbeatable, as they make their money by forcing the player to lose the game. On the other hand, games sold at home are more likely to have discrete victory conditions, since a publisher wants the player to purchase another game when they are done.

Subgenres

Action games have several major subgenres. However, there are many action games without any clear subgenre, such as Frogger
Frogger
Frogger is an arcade game introduced in 1981. It was developed by Konami, and licensed for worldwide distribution by Sega/Gremlin. The object of the game is to direct frogs to their homes one by one. To do this, each frog must avoid cars while crossing a busy road and navigate a river full of...

, as well as other types of genres like Adventure or Strategy that have action elements.

Beat 'em up
Beat 'em up
Beat 'em up is a video game genre featuring melee combat between the protagonist and a large number of underpowered antagonists. These games typically take place in urban settings and feature crime-fighting and revenge-based plots, though some games may employ historical or fantasy themes...

s
are games that involve fighting through a side-scrolling stage of multiple adversaries, using martial arts or other close-range fighting techniques.

Fighting game
Fighting game
Fighting game is a video game genre where the player controls an on-screen character and engages in close combat with an opponent. These characters tend to be of equal power and fight matches consisting of several rounds, which take place in an arena. Players must master techniques such as...

s
feature combat between pairs of fighters, usually using exaggerated martial arts moves. Actions are limited to various attacks and defenses, and matches end when a fighter's health is reduced to zero. They often make use of special moves and combos. There are both 2D and 3D fighting games, but most 3D fighting games largely take place in a 2D plane and occasionally include side-stepping. They are distinct from sports game
Sports game
A sports game is a computer or video game that simulates the practice of traditional sports. Most sports have been recreated with a game, including team sports, athletics and extreme sports. Some games emphasize actually playing the sport , whilst others emphasize strategy and organization...

s such as boxing games which attempt to model movements and techniques more realistically.

Maze games such as Pac-Man
Pac-Man
is an arcade game developed by Namco and licensed for distribution in the United States by Midway, first released in Japan on May 22, 1980. Immensely popular from its original release to the present day, Pac-Man is considered one of the classics of the medium, virtually synonymous with video games,...

involve navigating a maze to avoid or chase adversaries.

Platform game
Platform game
A platform game is a video game characterized by requiring the player to jump to and from suspended platforms or over obstacles . It must be possible to control these jumps and to fall from platforms or miss jumps...

s
involve jumping between platforms of different heights, while battling enemies and avoiding obstacles. Physics are often unrealistic, and game levels are often vertically exaggerated. They exist in both 2D and 3D forms.

Rhythm action games
Rhythm game
Rhythm game or rhythm action is a genre of music-themed action video game that challenges a player's sense of rhythm. Games in the genre typically focus on dance or the simulated performance of musical instruments, and require players to press buttons in a sequence dictated on the screen...

challenge the player's sense of rhythm, and award points for accurately pressing certain buttons in sync with a musical beat. This is a relatively new subgenre of action game. Rhythm games are sometimes classified as a type of music game
Music video game
A music video game, also commonly known as a music game, is a video game where the gameplay is meaningfully and often almost entirely oriented around the player's interactions with a musical score or individual songs...

.

Shooter game
Shooter game
Shooter games are a sub-genre of action game, which often test the player's speed and reaction time. It includes many subgenres that have the commonality of focusing "on the actions of the avatar using some sort of weapon. Usually this weapon is a gun, or some other long-range weapon". A common...

s
allow the player to take action at a distance using a ranged weapon, challenging them to aim with accuracy. Although shooting is usually a form of violence, non-violent shooters exist as well. This subgenre includes first-person shooter
First-person shooter
First-person shooter is a video game genre that centers the gameplay on gun and projectile weapon-based combat through first-person perspective; i.e., the player experiences the action through the eyes of a protagonist. Generally speaking, the first-person shooter shares common traits with other...

s and third-person shooters, as well as a plethora of other shoot 'em up
Shoot 'em up
Shoot 'em up is a subgenre of shooter video games. In a shoot 'em up, the player controls a lone character, often in a spacecraft or aircraft, shooting large numbers of enemies while dodging their attacks. The genre in turn encompasses various types or subgenres and critics differ on exactly what...

 games taking place from a top-down or side-view perspective.

Physical impact

Studies have shown that people can improve their eyesight by playing action video games. Tests by scientists at the University of Rochester
University of Rochester
The University of Rochester is a private, nonsectarian, research university in Rochester, New York, United States. The university grants undergraduate and graduate degrees, including doctoral and professional degrees. The university has six schools and various interdisciplinary programs.The...

 on college students showed that over a period of a month, performance in eye examinations improved by about 20% in those playing Unreal Tournament
Unreal Tournament
Unreal Tournament is a futuristic first-person shooter video game co-developed by Epic Games and Digital Extremes. It was published in 1999 by GT Interactive. Retrospectively, the game has also been referred to as UT99 or UT Classic to differentiate it from its numbered sequels...

compared to those playing Tetris
Tetris
Tetris is a puzzle video game originally designed and programmed by Alexey Pajitnov in the Soviet Union. It was released on June 6, 1984, while he was working for the Dorodnicyn Computing Centre of the Academy of Science of the USSR in Moscow, Russian Soviet Federative Socialist Republic...

. Most arcade game
Arcade game
An arcade game is a coin-operated entertainment machine, usually installed in public businesses such as restaurants, bars, and amusement arcades. Most arcade games are video games, pinball machines, electro-mechanical games, redemption games, and merchandisers...

s are action games, because they can be difficult for unskilled players, and thus make more money quickly.

Researchers from Helsinki School of Economics
Helsinki School of Economics
The Aalto University School of Economics , known as Helsinki School of Economics until 2009, is the largest and leading business school in Finland and one of the most renowned in Europe...

have shown that people playing a first-person shooter
First-person shooter
First-person shooter is a video game genre that centers the gameplay on gun and projectile weapon-based combat through first-person perspective; i.e., the player experiences the action through the eyes of a protagonist. Generally speaking, the first-person shooter shares common traits with other...

might secretly enjoy that their character gets killed in the game, although their expressions might show the contrary. Game used in the study was James Bond 007: Nightfire
James Bond 007: Nightfire
007: NightFire is a first-person shooter video game featuring the character of the British secret agent James Bond and a sequel to Agent Under Fire, published by Electronic Arts in ....

.

History

Almost all the earliest video games were action games. Space Invaders
Space Invaders
is an arcade video game designed by Tomohiro Nishikado, and released in 1978. It was originally manufactured and sold by Taito in Japan, and was later licensed for production in the United States by the Midway division of Bally. Space Invaders is one of the earliest shooting games and the aim is to...

from 1978, Asteroids from 1979, and Pac-Man
Pac-Man
is an arcade game developed by Namco and licensed for distribution in the United States by Midway, first released in Japan on May 22, 1980. Immensely popular from its original release to the present day, Pac-Man is considered one of the classics of the medium, virtually synonymous with video games,...

from 1980 are some of the earliest video games, and have since become iconic examples from the action genre. Since Space Invaders, action games have been the most dominant genre on both arcades
Arcade game
An arcade game is a coin-operated entertainment machine, usually installed in public businesses such as restaurants, bars, and amusement arcades. Most arcade games are video games, pinball machines, electro-mechanical games, redemption games, and merchandisers...

 and consoles
Video game console
A video game console is an interactive entertainment computer or customized computer system that produces a video display signal which can be used with a display device to display a video game...

, through to the present day. While Space Invaders set the template for the shooter game
Shooter game
Shooter games are a sub-genre of action game, which often test the player's speed and reaction time. It includes many subgenres that have the commonality of focusing "on the actions of the avatar using some sort of weapon. Usually this weapon is a gun, or some other long-range weapon". A common...

 subgenre, Donkey Kong
Donkey Kong (video game)
is an arcade game released by Nintendo in 1981. It is an early example of the platform game genre, as the gameplay focuses on maneuvering the main character across a series of platforms while dodging and jumping over obstacles. In the game, Jumpman must rescue a damsel in distress, Lady, from a...

did the same for the platform game
Platform game
A platform game is a video game characterized by requiring the player to jump to and from suspended platforms or over obstacles . It must be possible to control these jumps and to fall from platforms or miss jumps...

 subgenre when it released in 1981.

Robotron: 2084
Robotron: 2084
Robotron: 2084 is an arcade video game developed by Vid Kidz and released by Williams Electronics in 1982. It is a shooting game that features two-dimensional graphics. The game is set in the year 2084, in a fictional world where robots have turned against humans...

, released in arcades in 1982, became an instant classic in the shooter subgenre. Paperboy
Paperboy (video game)
Paperboy is a 1984 arcade game by Atari Games. The players take the role of a paperboy who delivers newspapers along a suburban street on his bicycle. This game was innovative for its theme and novel controls.-Gameplay:...

was released in 1984, and managed to turn the task of delivering newspapers into an action game, thus demonstrating the versatility of the genre. That same year saw the emergence of martial arts themed games, with Karate Champ
Karate Champ
Karate Champ, known in Japan as is a arcade game developed by Technos Japan Corporation for Data East. It is one of the first fighting games, and has been believed to be the first to use today's common side-perspective...

establishing the one-on-one fighting game
Fighting game
Fighting game is a video game genre where the player controls an on-screen character and engages in close combat with an opponent. These characters tend to be of equal power and fight matches consisting of several rounds, which take place in an arena. Players must master techniques such as...

 subgenre, and Kung-Fu Master laying the foundations for the side-scrolling
Side-scrolling video game
A side-scrolling game or side-scroller is a video game in which the gameplay action is viewed from a side-view camera angle, and the onscreen characters generally move from the left side of the screen to the right. These games make use of scrolling computer display technology...

 beat 'em up
Beat 'em up
Beat 'em up is a video game genre featuring melee combat between the protagonist and a large number of underpowered antagonists. These games typically take place in urban settings and feature crime-fighting and revenge-based plots, though some games may employ historical or fantasy themes...

 subgenre.

Although Doom, released in 1994, was not the earliest first-person shooter
First-person shooter
First-person shooter is a video game genre that centers the gameplay on gun and projectile weapon-based combat through first-person perspective; i.e., the player experiences the action through the eyes of a protagonist. Generally speaking, the first-person shooter shares common traits with other...

, it became a worldwide classic for its emotional tone, and for breaking away from rectangular rooms and flat floors. Third-person shooter
Third-person shooter
Third-person shooter is a genre of 3D action games in which the player character is visible on-screen, and the gameplay consists primarily of shooting.-Definition:...

s have also gained popularity in recent years, due to innovations such as the lock-on targeting introduced in 1998's The Legend of Zelda: Ocarina of Time
The Legend of Zelda: Ocarina of Time
is an action-adventure video game developed by Nintendo's Entertainment Analysis and Development division for the Nintendo 64 video game console. It was released in Japan on November 21, 1998; in North America on November 23, 1998; and in Europe on December 11, 1998...

, the cover system
Cover system
A cover system is how a video game lets a virtual avatar avoid dangers usually in a three-dimensional world. This method is a digital adaptation of the real-life military tactic of taking cover to dodge enemy gunfire or explosives. Similar gameplay elements can be traced back to as early as 1986,...

 introduced in 1999's WinBack
WinBack
Winback is a third-person shooter video game developed by Koei's Omega Force studio for the Nintendo 64 in 1999 and PlayStation 2 in 2001...

, and over-the-shoulder aiming introduced in 2005's Resident Evil 4
Resident Evil 4
Resident Evil 4, known in Japan as , is a survival horror third-person shooter video game developed by Capcom Production Studio 4 and published by multiple publishers, including Capcom, Ubisoft, Nintendo Australia, Red Ant Enterprises and THQ Asia Pacific...

.
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