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96-618: Space Monster (known as Alien Invaders - Plus! in North America) is a fixed shooter video game for the Philips Magnavox Odyssey² , a console released in 1978. Similar to Space Invaders , the object of the game is to destroy all invading aliens while also avoiding fire. The player controls a robot inside of the mobile laser cannon which is used to attack the enemy robots. The Merciless Monstroth (an eye shaped enemy that constantly moves back and forth across

192-841: A first-person shooter might secretly enjoy that their character gets killed in the game, although their expressions might show the contrary. The game used in the study was James Bond 007: Nightfire . Shooter games have been around since the beginning of the video game industry . Notable examples of shooting arcade video games during the early-to-mid-1970s include Syzygy Engineering 's Computer Space (1971), Galaxy Game (1971), Tank (1974) by Kee Games , Gun Fight (1975) by Taito and Midway Manufacturing , and Midway's Sea Wolf (1976). In turn, early arcade shooter video games were inspired by early mainframe games such as Spacewar! (1962) as well as arcade electro-mechanical games such as Periscope (1965) and gun games . A major turning point for action video games came with

288-406: A game over when they run out of lives. Alternatively, the player gets to the end of the game by finishing a sequence of levels to complete a final goal, and see the credits . Some action games, such as early arcade games , are unbeatable and have an indefinite number of levels. The player's only goal is to get as far as they can, to maximize their score. The action genre includes any game where

384-417: A level , collecting objects, avoiding obstacles, and battling enemies with their natural skills as well as weapons and other tools at their disposal. At the end of a level or group of levels, the player must often defeat a boss enemy that is more challenging and often a major antagonist in the game's story. Enemy attacks and obstacles deplete the player character's health and lives , and the player receives

480-408: A side-scrolling format. Later notable side-scrolling run and gun shooters include Namco's Rolling Thunder (1986), which added cover mechanics to the formula, and Data East's RoboCop (1988). In 1987, Konami created Contra , a side-scrolling coin-op arcade game, and later a NES game, that was particularly acclaimed for its multi-directional aiming and two-player cooperative gameplay. By

576-431: A sub-genre of action games . There is no consensus as to which design elements compose a shoot 'em up; some restrict the definition to games featuring spacecraft and certain types of character movement, while others allow a broader definition including characters on foot and a variety of perspectives. The genre's roots can be traced back to earlier shooting games , including target shooting electro-mechanical games of

672-471: A "shmup" or "STG" (the common Japanese abbreviation for "shooting games"), is a game in which the protagonist combats a large number of enemies by shooting at them while dodging their fire. The controlling player must rely primarily on reaction times to succeed. Beyond this, critics differ on exactly which design elements constitute a shoot 'em up. Some restrict the genre to games featuring some kind of craft, using fixed or scrolling movement. Others widen

768-401: A black background. It had a more interactive style of play than earlier target shooting games, with multiple enemies who responded to the player-controlled cannon's movement and fired back at the player. The game ended when the player was killed by the enemies. While earlier shooting games allowed the player to shoot at targets, Space Invaders was the first where multiple enemies fired back at

864-408: A broad category of action games, referring to a variety of games that are driven by the physical actions of player characters . The term dates back to the golden age of arcade video games in the early 1980s, when the terms "action games" and "character games" began being used to distinguish a new emerging genre of character-driven action games from the space shoot 'em ups that had previously dominated

960-698: A different approach to game design at the time. According to Eugene Jarvis, American arcade developers focused mainly on space shooters during the late 1970s to early 1980s, greatly influenced by Japanese space shooters but taking the genre in a different direction from the "more deterministic, scripted, pattern-type" gameplay of Japanese games, towards a more "programmer-centric design culture, emphasizing algorithmic generation of backgrounds and enemy dispatch" and "an emphasis on random-event generation, particle-effect explosions and physics" as seen in arcade games such as his own Defender (1981) and Robotron: 2084 (1982) as well as Atari 's Asteroids (1979). In

1056-412: A dominant genre in video arcades and on game consoles through to the present day. Space Invaders set the template for later games in the shooter subgenre, and it is considered one of the most influential games of all time. During the arcade golden age, from the late 1970s to early 1980s, a wide variety of new subgenres were created. The success of Space Invaders led to space shooters becoming

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1152-416: A limited range, but this attack is rare. Players may find a power-up 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 that involve navigating

1248-406: A more deterministic, scripted, pattern-type" of play. Terms such as "action games" or "character games" began being used to distinguish these new character-driven action games from the space shooters that had previously dominated the video game industry. The emphasis on character-driven gameplay in turn enabled a wider variety of subgenres. Namco 's hit maze game Pac-Man (1980) popularized

1344-567: A more successful attempt to incorporate a 3D perspective into shooter games; Tempest went on to influence several later rail shooters. Sega's Zaxxon (1981) introduced isometric video game graphics to the genre. The term "shmup" is believed to have been coined in 1985 by the British Commodore 64 magazine Zzap!64 . In the July 1985 issue, the term was used by the editor Chris Anderson and reviewer Julian Rignall . 1985 saw

1440-508: 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 home video games have shifted increasingly to unlimited lives. Action games take place in either 2D or 3D from

1536-680: A plethora of shoot 'em up games taking place from a top-down or side-scrolling perspective. Space shooters were initially categorized as a separate genre from action games in the early 1980s, when the term was used to refer to character action games, up until character-driven shooters, particularly scrolling run-and-gun shooters, became popular by the late 1980s. The setting of shooter games often involves military conflicts, whether historical, such as World War II , contemporary, such as Middle East conflicts , or fictional, such as space warfare . Shooter games do not always involve military conflicts. Other settings include hunting games, or follow

1632-417: A rail shooter released in 1985, broke new ground graphically and its wide variety of settings across multiple levels gave players more to aim for than high scores. In 1986, Arsys Software released WiBArm , a shooter that switched between a 2D side-scrolling view in outdoor areas to a fully 3D polygonal third-person perspective inside buildings, while bosses were fought in an arena-style 2D battle, with

1728-541: A shoot 'em up, as opposed to an action-adventure game . The success of Commando and Ikari Warriors led to run and gun games becoming the dominant style of shoot 'em up during the late 1980s to early 1990s, with the term "shoot 'em up" itself becoming synonymous with "run and gun" during this period. Konami 's Green Beret (1985), known as Rush'n Attack in North America, adapted the Commando formula to

1824-437: 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 to pursue the player. Enemies sometimes appear 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

1920-526: A straight line at constant speeds. The player's character can collect " power-ups " which may afford the character's greater protection, an " extra life ", health, shield, or upgraded weaponry. Different weapons are often suited to different enemies, but these games seldom keep track of ammunition. As such, players tend to fire indiscriminately, and their weapons only damage legitimate targets. Shoot 'em ups are categorized by their design elements, particularly viewpoint and movement: Fixed shooters restrict

2016-576: A third-person view, and featured the use of force feedback , where the joystick vibrates. Over the course of the 1990s, a new subgenre of shooters evolved, known as " danmaku ( 弾幕 , "barrage") in Japan, and often referred to as "bullet hell" or "manic shooters" in English-speaking regions. These games are characterized by high numbers of enemy projectiles, often in complex "curtain fire" patterns, as well as collision boxes that are smaller than

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2112-430: 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 perspective or third-person perspective. However, some 3D games offer a context-sensitive perspective that

2208-487: A vehicle or spacecraft under constant attack. Thus, the player's goal is to shoot as quickly as possible at anything that moves or threatens them to reach the end of the level, usually with a boss battle . In some games, the player's character can withstand some damage or a single hit will result in their destruction. The main skills required in shoot 'em ups are fast reactions and memorising enemy attack patterns. Some games feature overwhelming numbers of enemy projectiles and

2304-451: 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 . 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, or attacking particular part of

2400-733: A world. 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. 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,

2496-555: A wrap-around game world, unlike most later games in the genre. The scrolling helped remove design limitations associated with the screen, and it also featured a minimap radar. Scramble , released by Konami in early 1981, had continuous scrolling in a single direction and was the first side-scrolling shooter with multiple distinct levels . In the early 1980s, Japanese arcade developers began moving away from space shooters towards character action games , whereas American arcade developers continued to focus on space shooters during

2592-482: Is a subgenre of shooters in which the screen becomes crowded with complex "curtain fire" enemy patterns. It is also characterized by collision boxes that are smaller than the sprites themselves, to accommodate maneuvering through these crowded firing patterns. This style of game, also known as "manic shooters" or "maniac shooters", originated in the mid-1990s as an offshoot of scrolling shooters. The DonPachi and Touhou Project series are early titles establishing

2688-443: Is controlled by an artificial intelligence 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 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. Action games tend to set simple goals, and reaching them

2784-477: Is notable for using a traditional fantasy setting in contrast to most shoot 'em up games filled with science fiction motifs. R-Type , an acclaimed side-scrolling shoot 'em up, was released in 1987 by Irem , employing slower paced scrolling than usual, with difficult, claustrophobic levels calling for methodical strategies. 1990's Raiden was the beginning of another acclaimed and enduring series to emerge from this period. Run and gun games became popular in

2880-528: 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

2976-434: 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. Players advance through an action game by completing a series of levels . Levels are often grouped by theme, with similar graphics and enemies called

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3072-864: Is still a single axis of motion, making these a subset of fixed shooters. Rail shooters limit the player to moving around the screen while following a specific route; these games often feature an "into the screen" viewpoint, with which the action is seen from behind the player character , and moves "into the screen", while the player retains control over dodging. Examples include Space Harrier (1985), Captain Skyhawk (1990), Starblade (1991), Star Fox (1993), Star Wars: Rebel Assault (1993), Panzer Dragoon (1995), and Sin and Punishment (2000). Rail shooters that use light guns are called light gun shooters , such as Operation Wolf (1987), Lethal Enforcers (1992), Virtua Cop (1994), Point Blank (1994), Time Crisis (1995), The House of

3168-515: The Geometry Wars series, Space Invaders Extreme , Super Stardust HD , and Resogun . The concept of shooting games existed before video games , dating back to shooting gallery carnival games in the late 19th century and target sports such as archery , bowling and darts . Mechanical target shooting games first appeared in England 's amusement arcades around the turn of

3264-575: The Front Line tank shooter format with unique rotary joystick controls, which they later combined with Commando -inspired run and gun gameplay to develop Ikari Warriors (1986), which further popularized run and gun shooters. Ikari Warriors also drew inspiration from the action film Rambo: First Blood Part II (1985), which it was originally intended to be an adaptation of. Contemporary critics considered military themes and protagonists similar to Rambo or Schwarzenegger prerequisites for

3360-486: The University of Rochester on college students showed that over a period of a month, performance in eye examinations improved by about 20% in those playing Unreal Tournament compared to those playing Tetris . Most arcade games are action games, because they can be difficult for unskilled players, and thus make more money quickly. Researchers from Helsinki School of Economics have shown that people playing

3456-466: The Xbox 360 , PlayStation 3 and Wii online services, while in Japan arcade shoot 'em ups retain a deep-rooted niche popularity. Geometry Wars: Retro Evolved was released on Xbox Live Arcade in 2005 and in particular stood out from the various re-releases and casual games available on the service. The PC has also seen its share of dōjin shoot 'em ups like Crimzon Clover , Jamestown: Legend of

3552-459: The arcades in the late 1970s. Classic examples of character action games from the early 1980s include Frogger , maze games like Pac-Man , and platformers like Donkey Kong . Shooter games allow the player to take action at a distance using a ranged weapon, challenging them to aim with accuracy and speed. This subgenre includes first-person shooters , third-person shooters , light gun shooters , rail shooters , run and gun games and

3648-443: The high score . It also had a basic story with animated characters along with a "crescendo of action and climax" which laid the groundwork for later video games, according to Eugene Jarvis , who said many games "still rely on the multiple life , progressively difficult level paradigm" of Space Invaders . Following the mainstream success of Space Invaders , the industry came to be dominated by action games, which have remained

3744-430: The vertical scrolling format later popularized by Capcom 's Commando (1985), which established the standard formula used by later run and gun games. Sega's Ninja Princess (1985), which released slightly before Commando , was a run and gun game that was distinctive for its feudal Japan setting and female ninja protagonist who throws shuriken and knives. SNK 's TNK III , released later in 1985, combined

3840-430: The 1978 release of Taito's shoot 'em up game Space Invaders , which marked the beginning of the golden age of arcade video games . The game was designed by Tomohiro Nishikado , who drew inspiration from Atari 's Breakout (1976) and the science fiction genre. Nishikado added several interactive elements to Space Invaders that he found lacking in earlier video games, such as the ability for enemies to react to

3936-498: The 1980s to early 1990s, diversifying into a variety of subgenres such as scrolling shooters, run and gun games and rail shooters. In the mid-1990s, shoot 'em ups became a niche genre based on design conventions established in the 1980s, and increasingly catered to specialist enthusiasts, particularly in Japan. " Bullet hell " games are a subgenre of shooters that features overwhelming numbers of enemy projectiles , often in visually impressive formations. A "shoot 'em up", also known as

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4032-530: The 20th century, before appearing in America by the 1920s. Shooting gallery games eventually evolved into more sophisticated target shooting electro-mechanical games (EM games) such as Sega 's influential Periscope (1965). Shooting video games have roots in EM shooting games. Video game journalist Brian Ashcraft argues the early mainframe game Spacewar! (1962) was the first shoot 'em up video game. It

4128-511: The Dead (1996) and Elemental Gearbolt (1997). Light-gun games that are "on rails" are usually not considered to be in the shoot-em-up category, but rather their own first-person light-gun shooter category. Cute 'em ups feature brightly colored graphics depicting surreal settings and enemies. Cute 'em ups tend to have unusual, oftentimes completely bizarre opponents for the player to fight, with Twinbee and Fantasy Zone first pioneering

4224-509: The Lost Colony , Xenoslaive Overdrive , and the eXceed series . However, despite the genre's continued appeal to an enthusiastic niche of players, shoot 'em up developers are increasingly embattled financially by the power of home consoles and their attendant genres. Action game In an action game, the player typically controls a character often in the form of a protagonist or avatar . This player character must navigate

4320-608: The North American home video game market (after it had crashed in 1983 ). Alongside side-scrollers, rail shooters and light gun shooters also became popular during the mid-to-late 1980s. Popular examples include first-person light gun shooting gallery games such as Nintendo 's Duck Hunt (1984), pseudo-3D third-person rail shooters such as Sega's Space Harrier (1985) and After Burner (1987), and Taito's Operation Wolf (1987) which popularized military-themed first-person light gun rail shooters. A trend that

4416-474: 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

4512-448: The best player, paving the way for the competitive multiplayer and deathmatch modes found in modern action games. Inspired by Street Fighter II , along with the SNK fighting games Fatal Fury (1991) and Art of Fighting (1992), John Romero created the deathmatch mode in id Software 's Doom (1993), which popularized competitive multiplayer online games . In the 1990s, there

4608-401: The boss. In many action games, the avatar has a certain number of hit-markers 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 . Upon beginning

4704-634: The closure of Toaplan, the following year, a number of studios formed from former Toaplan staff that would continue to develop this style, including Cave (formed by Batsugun's main creator Tsuneki Ikeda) who released 1995's seminal DonPachi , and Takumi, who would develop the GigaWing series. Bullet hell games marked another point where the shooter genre began to cater to more dedicated players. Games such as Gradius had been more difficult than Space Invaders or Xevious , but bullet hell games were yet more inward-looking and aimed at dedicated fans of

4800-500: The dominant genre in arcades for a few years, before a new genre of character-driven action games emerged in the early 1980s. The term "action games" began being used in the early 1980s, in reference to a new genre of character action games that emerged from Japanese arcade developers, drawing inspiration from manga and anime culture. According to Eugene Jarvis , these new character-driven Japanese action games emphasized "character development, hand-drawn animation and backgrounds, and

4896-629: The early 1980s, up until the end of the arcade golden age. According to Eugene Jarvis , American developers were greatly influenced by Japanese space shooters but took the genre in a different direction from the "more deterministic, scripted, pattern-type" gameplay of Japanese games, towards a more "programmer-centric design culture, emphasizing algorithmic generation of backgrounds and enemy dispatch" and "an emphasis on random-event generation, particle-effect explosions and physics" as seen in arcade games such as his own Defender and Robotron: 2084 (1982) as well as Atari's Asteroids (1979). Robotron: 2084

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4992-400: The early 1990s and the popularity of 16-bit consoles , the scrolling shooter genre was overcrowded, with developers struggling to make their games stand out, with exceptions such as the inventive Gunstar Heroes (1993) by Treasure . Sega's pseudo-3D rail shooter Buck Rogers: Planet of Zoom demonstrated the potential of 3D shoot 'em up gameplay in 1982. Sega's Space Harrier ,

5088-503: The emergence of one of Sega's forefront series with its game Fantasy Zone . The game received acclaim for its surreal graphics and setting and the protagonist, Opa-Opa, was for a time considered Sega's mascot . The game borrowed Defender's device of allowing the player to control the direction of flight and along with the earlier TwinBee (1985), is an early archetype of the "cute 'em up" subgenre. In 1986, Taito released KiKi KaiKai , an overhead multi-directional shooter. The game

5184-494: The first games to popularize twin-stick controls was Robotron: 2084 (1982). Space shooters are a thematic variant of involving spacecraft in outer space . Following the success of Space Invaders , space shooters were the dominant subgenre during the late 1970s to early 1980s. These games can overlap with other subgenres as well as space combat games . Tube shooters feature craft flying through an abstract tube, such as Tempest (1981) and Gyruss (1983). There

5280-457: The game featuring a variety of weapons and equipment. In 1987, Square's 3-D WorldRunner was an early stereoscopic 3-D shooter played from a third-person perspective, followed later that year by its sequel JJ , and the following year by Space Harrier 3-D which used the SegaScope 3-D shutter glasses . That same year, Sega's Thunder Blade switched between both a top-down view and

5376-404: The game has only eight attackers, the reviewers argued that the game "is no pushover", and suggested that it is a "unique and interesting S-F videogame" and that it "makes a nice change of pace from the usual run of space-invasion games because it is less derivative by far than most of them". List of Videopac games Fixed shooter Shoot 'em ups (also known as shmups or STGs ) are

5472-431: The genre looking for greater challenges. While shooter games featuring protagonists on foot largely moved to 3D-based genres, popular, long-running series such as Contra and Metal Slug continued to receive new sequels. Rail shooters have rarely been released in the new millennium, with only Rez and Panzer Dragoon Orta achieving cult recognition. In the early 2000s, the genre achieved recognition through

5568-459: The genre of "character-led" action games. It was one of the first popular non-shooting action games, defining key elements of the genre such as "parallel visual processing" which requires simultaneously keeping track of multiple entities, including the player character, the character's location, the enemies, and the energizers. Other classic examples of character action games that followed include Nintendo 's Donkey Kong (1981), which established

5664-474: The laser cannon will reappear. If all three shields are lost, the Merciless Monstroth will engage the player until either all enemies are destroyed or the player is destroyed. First to win ten games wins the match. Space Monster was reviewed by Video in its "Arcade Alley" column where it was described as "a surprisingly innovative switcheroo on good old Space Invaders ". Despite noting that

5760-420: The level is completed with time remaining, this usually adds to the player's score. In most action games, the player controls a single avatar as the protagonist . 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

5856-547: The mid-1980s, side-scrolling character action games emerged, combining elements from earlier side-view, single-screen character action games, such as single-screen platformers, with the side-scrolling of space shooters. These new side-scrolling character-driven action games featured large character sprites in colorful, side-scrolling environments, with the core gameplay consisting of fighting large groups of weaker enemies using attacks/weapons such as punches, kicks, guns, swords, ninjutsu or magic. The most notable early example

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5952-420: The mid-1980s. These games feature characters on foot, rather than spacecraft, and often have military themes. The origins of this type of shooter go back to Sheriff by Nintendo , released in 1979. SNK 's Sasuke vs. Commander (1980), which had relatively detailed background graphics for its time, pit a samurai against a horde of ninjas , along with boss fights . Taito's Front Line (1982) introduced

6048-411: The mid-20th-century, but did not receive a video game release until Spacewar! (1962). The shoot 'em up genre was established by the hit arcade game Space Invaders , which popularised and set the general template for the genre in 1978, and has spawned many clones. The genre was then further developed by arcade hits such as Asteroids and Galaxian in 1979. Shoot 'em ups were popular throughout

6144-432: The mobile game Space Impact , which is considered one of the important games in the history of mobile games . Treasure's shoot 'em up, Radiant Silvergun (1998), introduced an element of narrative to the genre. It was critically acclaimed for its refined design, though it was not released outside Japan and remains a much sought-after collector's item. Its successor Ikaruga (2001) featured improved graphics and

6240-503: The platforming of Donkey Kong and Mario Bros. (1983) with side-scrolling elements from racing game Excitebike (1984) and beat 'em up Kung-Fu Master to create Super Mario Bros. (1985) for the Nintendo Entertainment System (NES). It went on to have a significant impact on the video game industry , establishing the conventions of the side-scrolling platformer sub-genre and helping to reinvigorate

6336-456: The player against multiple enemies descending from the top of the screen at a constantly increasing speed. Nishikado conceived the game by combining elements of Breakout (1976) with those of earlier target shooting games, and simple alien creatures inspired by H. G. Wells ' The War of the Worlds . The hardware was unable to render the movement of aircraft, so the game was set in space, with

6432-401: The player and enemies to a single screen, and the player primarily moves along a single axis, such as back and forth along the bottom of the screen. Examples include Space Invaders (1978), Galaxian (1979), Phoenix (1980), and Galaga (1981). In Pooyan (1982), the fixed axis of movement is vertical, along the right side of the screen. In Centipede (1980) and Gorf (1981),

6528-574: The player has to memorise their patterns to survive. These games belong to one of the fastest-paced video game genres . Large numbers of enemy characters programmed to behave in an easily predictable manner are typically featured. These enemies may behave in a certain way dependent on their type, or attack in formations that the player can learn to predict. The basic gameplay tends to be straightforward with many varieties of weapons. Shoot 'em ups rarely have realistic physics. Characters can instantly change direction with no inertia , and projectiles move in

6624-491: The player in a trance-like state. In trance shooters, enemy patterns usually have randomized elements, forcing the player to rely on reflexes rather than pattern memorization. Games of this type usually feature colorful, abstract visuals, and electronic music (often techno music ). Jeff Minter is commonly credited with originating the style with Tempest 2000 (1994) and subsequent games including Space Giraffe , Gridrunner++ , and Polybius (2017). Other examples include

6720-437: 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 elsewhere in

6816-403: The player overcomes challenges by physical means such as precise aim and quick response times. Action games can sometimes incorporate other challenges such as races, puzzles, or collecting objects, but they are not central to the genre. Players may encounter tactical and exploration challenges, but these games first-and-foremost require high reaction speed and good hand–eye coordination. The player

6912-480: The player primarily moves left and right along the bottom, but several inches of vertical motion are also allowed within an invisible box. Multidirectional shooters allow 360-degree movement where the protagonist may rotate and move in any direction such as Asteroids (1979) and Mad Planets (1983). Multidirectional shooters with one joystick for movement and one joystick for firing in any direction independent of movement are called twin-stick shooters . One of

7008-523: The player to lose the game. 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. Action games contain several major subgenres. However, there are a number of action games that do not fit any particular subgenres, as well as other types of genres like adventure or strategy games that have action elements. Character action games , also called "character-driven" games, "character games" or just "action games", are

7104-415: The player's flying vehicle moving forward, at a fixed rate, through an environment. Examples are Scramble (1981), Xevious (1982), Gradius (1986), Darius (1987), R-Type (1987), Einhänder (1997). In contrast, Defender (1981) allows the player to move left or right at will. Run and gun games have protagonists that move through the world on foot and shoot attackers. Examples include

7200-407: The player's movement and fire back and a game over triggered by enemies killing the player, either by getting hit or enemies reaching the bottom of the screen, rather than a timer running out. In contrast to earlier arcade games which often had a timer, Space Invaders introduced the "concept of going round after round." It also gave the player multiple lives before the game ends, and saved

7296-549: The player. It also introduced the idea of giving the player multiple lives and popularized the concept of achieving a high score . With these elements, Space Invaders set the general template for the shoot 'em up genre. It became one of the most widely cloned shooting games, spawning more than 100 imitators with only the most minor differences (if any) from the original. Most shooting games released since then have followed its "multiple life, progressively difficult level " paradigm, according to Eugene Jarvis . Following

7392-548: The principle of bullet hells. A bullet heaven or reverse bullet hell is a subgenre characterized by the player character collecting or unlocking abilities and attacks whose visuals overlap and clutter the game screen as the game progresses. They also share a feature of many enemy characters, commonly called "hordes", walking toward the player from off-screen. This genre is generally attributed to Vampire Survivors , released in 2022. A small subgenre of shooter games that emphasizes chaotic, reflex-based gameplay designed to put

7488-416: The release of Konami's Gradius , which gave the player greater control over the choice of weaponry, thus introducing another element of strategy. The game also introduced the need for the player to memorise levels in order to achieve any measure of success. Gradius , with its iconic protagonist, defined the side-scrolling shoot 'em up and spawned a series spanning several sequels. The following year saw

7584-426: The same level. Levels often make use of locked doors that can only be opened with a specific key found elsewhere 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

7680-423: The scope to include games featuring such protagonists as robots or humans on foot, as well as including games featuring "on-rails" (or "into the screen") and "run and gun" movement. Mark Wolf restricts the definition to games featuring multiple antagonists ("'em" being short for "them"), calling games featuring one-on-one shooting "combat games". Formerly, critics described any game where the primary design element

7776-477: The sprites themselves, allowing the player to fit between the narrow gaps in enemy fire. Bullet hell games were first popularized in Japanese arcades during a time when 3D games and fighting games were eclipsing other games. The flashy firing patterns were intended to grab players attention. Toaplan 's Batsugun (1993) is often considered a pivotal point in the development of this subgenre. After

7872-539: The story of a criminal, as seen in the popular Grand Theft Auto franchise. Although shooting is almost always a form of violence, non-violent shooters exist as well, such as Splatoon which focuses on claiming more territory than the opposing team, by covering the playable environment with colored paint or ink. Hybrid action games are games that combine elements of action games with elements from other genres. Studies have shown that people can improve their eyesight by playing action video games. Tests by scientists at

7968-612: The subgenre, along with Parodius , Cotton , and Harmful Park being additional key games. Some cute 'em ups may employ overtly sexual characters and innuendo. Vertically scrolling shooters present the action from above and scroll up (or occasionally down) the screen. Horizontally scrolling shooters usually present a side-on view and scroll left to right (or less often, right to left). Isometrically scrolling shooters or isometric shooters , such as Sega 's Zaxxon (1982), use an isometric point of view . A popular implementation style of scrolling shooters has

8064-550: The success of Space Invaders , shoot 'em ups became the dominant genre for much of the golden age of arcade video games , from the late 1970s up until the early 1980s, particularly the "space shooter" subgenre. In 1979, Namco 's Galaxian —"the granddaddy of all top-down shooters", according to IGN—was released. Its use of colour graphics and individualised antagonists were considered "strong evolutionary concepts" among space ship games. In 1981 Gorf brought joystick control and (limited) vertical as well as horizontal movement to

8160-441: The template for the platform game subgenre, as well as Konami 's Frogger (1981) and Universal Entertainment 's Lady Bug (1981). Martial arts action games eventually emerged in the mid-1980s, with Data East 's Karate Champ (1984) establishing the one-on-one fighting game subgenre. While Japanese developers were creating a character-driven action game genre in the early 1980s, American developers largely adopted

8256-426: The top of the screen) leads the invasion force of 8 robots. Each robot has a cannon and is protected by an indestructible green shield. The shields constantly move back and forth giving both the player and the enemy the opportunity to fire. If the player's laser cannon is struck, they will be defenseless unless they retreat to under one of the three large black shields. Once the player fires, the shield will disappear and

8352-472: The vertically scrolling, overhead view games Front Line (1982), Commando (1985), and Ikari Warriors (1986). Side-scrolling run and gun games often combine elements from platform games , such as the ability to jump: Contra (1987), Metal Slug (1996) and Cuphead (2017). Run and gun games may also use isometric viewpoints and may have multidirectional movement. Bullet hell ( 弾幕 , danmaku , literally "barrage" or "bullet curtain")

8448-545: The vertically-oriented fixed-shooter genre, while Space Invaders and Galaxian have only horizontal movement controlled by a pair of buttons. Atari 's Asteroids (1979) was a hit multi-directional shooter, taking from Spacewar! the ability for the player's ship to roam the entire screen and to rotate, move and shoot in any direction. The Space Invaders format evolved into the vertical scrolling shooter sub-genre. SNK 's debut shoot 'em up Ozma Wars (1979) featured vertical scrolling backgrounds and enemies, and it

8544-681: Was Irem 's Kung-Fu Master (1984), the first beat 'em up and the most influential side-scrolling martial arts action game. It was based upon two Hong Kong martial arts films, Bruce Lee 's Game of Death (1973) and Jackie Chan 's Wheels on Meals (1984), This side-scrolling arcade action format became popular during the mid-to-late 1980s, with examples including ninja action games such as Taito's The Legend of Kage (1985) and Sega 's Shinobi (1987), run and gun video games such as Namco 's Rolling Thunder (1986), and beat 'em ups such as Technōs Japan 's Renegade (1986) and Double Dragon (1987). Shigeru Miyamoto combined

8640-766: Was a "3D Revolution" where action games made the transition from 2D and pseudo-3D graphics to real-time 3D polygon graphics . 3D arcade system boards that were originally designed for 3D racing games during the late 1980s to early 1990s, such as the Namco System 21 , Sega Model 1 and Sega Model 2 , were used to produce 3D arcade action games in the early 1990s, including 3D rail shooters such as Namco 's Galaxian 3 (1990) and Solvalou (1991), 3D fighting games such as Sega AM2 's Virtua Fighter (1993) and Namco's Tekken (1994), and 3D light gun shooters such as Sega AM2's Virtua Cop (1994) and Namco's Time Crisis (1995). On personal computers ,

8736-530: Was again acclaimed as one of the best games in the genre. Both Radiant Silvergun and Ikaruga were later released on Xbox Live Arcade . The Touhou Project series spans 26 years and 30 games as of 2022 and was listed in the Guinness World Records in October 2010 for being the "most prolific fan-made shooter series". The genre has undergone something of a resurgence with the release of

8832-421: Was an influential game in the multi-directional shooter subgenre. Some games experimented with pseudo-3D perspectives at the time. Nintendo 's attempt at the genre, Radar Scope (1980), borrowed heavily from Space Invaders and Galaxian , but added a three-dimensional third-person perspective; the game was a commercial failure, however. Atari's Tempest (1981) was one of the earliest tube shooters and

8928-506: Was developed at the Massachusetts Institute of Technology in 1961, for the developers' amusement, and presents a space battle between two craft. It was remade four times as an arcade video game in the 1970s. Space Invaders (1978) is most frequently cited as the "first" or "original" in the genre. A seminal game created by Tomohiro Nishikado of Japan's Taito , it led to proliferation of shooter games. It pitted

9024-517: Was popularized for action games in the early 1990s was competitive multiplayer , including what would later be known as esports tournaments. The arcade fighting game Street Fighter II (1991) by Capcom popularized the concept of direct, tournament-level competition between two players. Previously, action games most often relied on high scores to determine the best player, but this changed with Street Fighter II , where players would instead challenge each other directly, "face-to-face," to determine

9120-404: Was shooting as a "shoot 'em up", but later shoot 'em ups became a specific, inward-looking genre based on design conventions established in those shooting games of the 1980s. Shoot 'em ups are a subgenre of action game . These games are usually viewed from a top-down or side-view perspective , and players must use ranged weapons to take action at a distance. The player's avatar is typically

9216-546: Was the first action game to feature a supply of energy, similar to hit points . Namco's Xevious , released in 1982, was one of the first and most influential vertical scrolling shooters. Xevious is also the first to convincingly portray dithered/shaded organic landscapes as opposed to blocks-in-space or wireframe obstacles. Side-scrolling shoot 'em ups emerged in the early 1980s. Defender , introduced by Williams Electronics in late 1980 and entering production in early 1981, allowed side-scrolling in both directions in

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