Cooperative gameplay

Cooperative gameplay (often abbreviated as co-op) is a feature in games that allows players to work together as teammates, usually against one or more non-player character opponents. In the case of video games, commonly specific reference to multiple users on separate systems entering the game of a single host user.

However, it may casually and less technical any play that involves working together rather than in opposition. It is distinct from other multiplayer modes, such as competitive multiplayer modes like player versus player or deathmatch. Playing simultaneously allows players to assist one another in many ways: passing weapons or items, healing, providing covering fire in a firefight, and performing cooperative maneuvers such as boosting a teammate up and over obstacles.

In its most simple form, cooperative gameplay modifies the single player mode of a game, allowing additional players, and increasing the difficulty level to compensate for the additional players. More complex examples exist, however, with broader modifications to the story and gameplay. Some co-op games include a new ending when completed in co-op mode. This new ending is unlocked only when players work as a team to complete the game. For instance, Bubble Bobble features an ending that can only be accessed when two players survive co-op mode, as do some console beat 'em up games such as Double Dragon, Streets of Rage, and Die Hard Arcade.

Co-op gaming doesn't typically refer sharing input devices or using multiple controllers connected to a single console, but may more casually infer it.

Universally, co-op tends to imply gameplay over a network, with co-op players joining an existing game running on a game server via a local area networks or wide area networks. Due to the complexity of video game coding, co-op games rarely allow network players and local players to mix. Exceptions do exist, however, such as Mario Kart Wii or Call of Duty Black Ops, which allows two players from the same console to play with others online.

Co-op gameplay has been gaining popularity in video games in recent years,[1] as controller and networking technology has developed. On PCs and consoles, cooperative games have become increasingly common, and many genres of game—including shooter games, sports games, real-time strategy games, and massively multiplayer online games—include co-op modes.

Co-op gaming can also exist in single player format, where the player works alongside their previous plays in order to complete an objective.

## Contents

* 1 History of arcade co-op gaming
* 2 History of console co-op gaming
* 3 History of PC co-op gaming
* 3.1 First-person shooters
* 3.2 Role-playing games
* 4 Gameplay characteristics
* 4.1 Couch co-op & online co-op modes
* 4.2 Display features
* 4.3 Resource management
* 4.4 Role of the second player
* 5 Video games with co-op mode
* 6 Asynchronous co-op mode
* 7 See also
* 8 References

## History of arcade co-op gaming

Atari, Inc.'s '1978 coin-op Fire Truck is widely believed to be the first arcade coin-op to feature co-op play.[2] As its title suggests the game involves a large fire truck, and in two-player mode both players are required to cooperatively steer the vehicle along a winding road, with one driving and steering the tractor of the truck and the other steering the tiller for the rear wheels, controlling the swing of the trailer.

Several early 1980s arcade coin-op games allowed for co-op play, but typically as an option. Wizard of Wor offered solo, competitive two-player, or cooperative two-player gaming.,[3] while Williams Electronics' Joust encouraged players to alternatively compete and cooperate by awarding bonus points for co-op play in some rounds (Survival Waves) while alternatively awarding bonuses for attacking the other player (Gladiator Waves). Two-player games of Nintendo's Mario Bros. could be played as competitively or cooperatively depending on the players' whims. Beat 'em up games like Final Fight in 1989 and Double Dragon in 1987 introduced a type of game where both players would work in tandem to clear out all of the enemies and proceed to the next area and ultimately the final boss. In 1998 Time Crisis 2 launched as the first in the series as a two-player arcade rail shooter where two players would go through levels with slight differences allowing each player to cover each other and utilize the environment to create cover. In 2009 Konami and Activision put out Guitar Hero Arcade, a co-op rhythm game which allowed players to work together to complete a song of their choosing or the two players could fight each other in the battle mode with each guitarist striving for a higher score.

## History of console co-op gaming

Early-generation home consoles typically did not offer co-op options, due to technical limitations which hindered the increased graphics required for simultaneous co-op play. Though consoles from the second generation of video games onward typically had controller ports for two-player games, most systems did not have the computing or graphical power for simultaneous play, leading most games that billed "2-player gameplay" as a feature to merely be the single player game with alternating players.

During this early era, many video games which featured co-op play (including beat 'em ups such as Double Dragon) were ported to less advanced home systems. Alternating play replaced the arcade's co-op play in the NES version (although Double Dragon II and III, for the same system, did retain their co-op gameplay). Most other titles featuring two-player were head-to-head sports titles. Though most of the console beat 'em ups were arcade ports, original franchises such as Streets of Rage and River City Ransom also became popular.

The run and gun genre was also popular for co-op games. Contra, for instance, was far more successful in its NES incarnation than it was in the arcade, and is now considered one of the most popular co-op games ever. Gunstar Heroes for the Sega Genesis and the Metal Slug series for the Neo Geo were also well-received titles.

Gauntlet (1985) and Quartet (1986) introduced co-op four-player gaming to the arcades. The games had broader consoles to allow for four sets of controls.

Electronic Arts has produced key co-op sports games, including the original NHL Hockey (1991) and Madden NFL (1990) installments on the Sega Genesis. These games allowed two players or more to play against the CPU. These franchises are arguably the most successful co-op sports games.[4]

Due to the lack of online multiplayer, co-op games in the RPG genre have generally been less common on console systems than on PCs. Nevertheless, some of the earliest co-op action RPGs were console titles, including the TurboGrafx-16 game Dungeon Explorer (1989)[5] by Atlus which allowed up to five players to play simultaneously,[6] and Square's Secret of Mana (1993) for the Super NES which offered two- and three-player action once the main character had acquired his party members. Secret of Mana's co-op gameplay was considered innovative in its time,[7] as it allowed the second or third players to drop in and out of the game at any time rather than players having to join the game at the same time, which has remained influential on titles as recent as the upcoming Dungeon Siege III.[8] Final Fantasy VI (1994) offered a form of alternating co-op play for its battles, with the second player taking control of half of the characters in the party. Namco's Tales series allowed multiple players to take control of individual members in its real-time battles in some of the titles, such as Tales of Symphonia, while the Baldur's Gate games replicated the Diablo formula for consoles, offering two-player simultaneous play through the game's campaign.

With the release of the Nintendo 64 (1996, 1997), having four controller ports started to become a standard feature in consoles, as the Dreamcast, Nintendo GameCube and Xbox all later featured them. As larger multiplayer games became feasible, cooperative gameplay also became more available. The 7th and current generations of video game consoles all feature wireless controllers, removing port-based local player limits. However, its effect on multiplayer is probably less pronounced than the advancement of console internet capabilities.

## History of PC co-op gaming

### First-person shooters

The release of Doom in 1993 was a breakthrough in network gaming. Though arguably deathmatch was both the most influential and most popular mode,[citation needed] Doom's co-op gameplay was also significant. Up to four players could travel through the entire game together, playing on separate computers over a LAN. The game's campaign mode was designed primarily for single player, but the difficulty was tweaked to compensate for extra human players. The following three games produced by id Software (Doom II, Quake and Quake II) all featured co-op modes. Some of these first-person shooters employ cooperative gameplay, where many players are joined to reach a common goal. However, some first person shooters do not make use of cooperative gameplay.[9]

Starting from the early 2000s, however, many FPS developers have forsaken co-op campaign play, opting to focus more purely on either a more detailed and in-depth single player experience or a purely multiplayer game.[citation needed] Epic's Unreal Tournament series had shifted almost entirely towards deathmatch modes, and significant FPS releases such as Doom 3, Quake 4, and both Half-Life titles shipped without cooperative gameplay modes. However, with the Gears of War franchise introducing the "Horde" four-player cooperative mode, it has undergone a resurgence, starting a trend which included Halo 3's "Firefight" mode and Call of Duty's "Nazi Zombies" mode.

### Role-playing games

Main article: Finance:Massively multiplayer online role-playing game

Most early role-playing video games were inspired by Dungeons & Dragons, but were restricted to single player due to the technology of the era. The earliest RPGs featuring something resembling co-op play were MUDs, which would later evolve into the MMOG genre.

Later PC RPGs became more powerful and flexible in simulating the shared real life RPG experience,[citation needed] allowing players to collaborate in games over the Internet. Blizzard Entertainment's immensely successful Diablo (1996), which incorporated Blizzard's online matchmaking service, battle.net, allowing the game's players to play through the entire single player campaign together. The D&D-sanctioned Baldur's Gate and Icewind Dale games, released in 1998 and 2000, respectively, allowed up to six players to play through the campaign mode over a network. Atari's Neverwinter Nights (2002) was an official and comprehensive D&D simulator, featuring even more robust game-creation tools and developing a sizable online community. It allowed one player to serve as a Dungeon Master, shaping and altering the game world against a party of human-controlled players, playing cooperatively. (An earlier game, Vampire (2000) was the earliest CRPG to feature this sort of "storyteller" mode.[citation needed])

Contemporary MMORPGs such as Blizzard Entertainment's World of Warcraft feature a mixture of single-player goals ("quests") and larger end-game challenges that can only be completed via intensive co-op play,[10] of up to twenty-five (formerly forty) players in end-game raids,[11] and up to forty versus forty in battlegrounds.

## Gameplay characteristics

### Couch co-op & online co-op modes

Cooperative games designed to be played by multiple players on the same display screen have come to be known as "couch co-op", "local co-op" or "single-player co-op" games. Cooperative games in which players each use their own display system are known as "online co-op", "network co-op" or "multiplayer co-op" games due to the majority of such systems utilizing telecommunications networks to synchronize game state among the players. Games have also been brought to market in which both modes can be combined—accommodating more than one display with each display accommodating one or more players.

### Display features

Many video games support split screen displays in order to show two or more players in different regions of the game. Split screen displays would usually split the main screen into either two or four sub-regions so that 2–4 players can roam freely within the game world. Many first-person and third-person shooter games use this technique when played in multiplayer co-op mode, such as the console versions of games in the Rainbow Six series, the Halo series or the fifth installment of the Call of Duty series, Call of Duty.

Split screen modes have also been combined with 3D Television technology by hobbyists, using alternate-frame sequencing for the purpose of presenting each of two couch co-op players with their own 2D full-screen image on the same display, rather than for stereoscopy. Due to the complexity involved in correcting the resulting aspect ratios, and that in obtaining 3D glasses which allowed both lenses to synchronize to the same eye-frame, this remained the purview of enthusiasts until 2011, when Sony Computer Entertainment America began to market a 3D display product for their consoles. This display system supported this practice under the trademark SimulView. While the SimulView feature set was designed to work only with the Sony 3D monitor, the move renewed interest in this technology, and it was not long before the gaming community circumvented this vendor lock-in gambit, allowing SimulView-supporting games to utilize the feature on third-party 3DTV equipment.[12]

Guacamelee is a brawler-based platform game that features cooperative play, allowing the two luchador characters to coordinate their actions for more effective combat

By contrast, in cooperative platform games, both players typically occupy the same screen and must coordinate their actions, particularly with regard to the scrolling. If the scrolling is limited to a forward direction only, players can potentially kill each other. For example, one player lagging behind could cause problems for his partner, as the screen will not scroll onward. If a player was attempting to complete a jump over a chasm, the "safe" surface on the far side of the chasm could be prevented from scrolling into view by a slow player.

Developers have attempted to counter these frustrations by using a camera that can zoom in and out over an entire level as needed, keeping both players within the scope of the camera. This type of camera was used to enable the display of four player cooperative gameplay in New Super Mario Bros. Wii. Another strategy allows player screens to be split when the player characters are far apart, but combine into one full-screen image when player characters are close enough together. The 2005 video game The Warriors is considered notable for attempting this in a 3D third-person perspective format.

### Resource management

A common concept in cooperative games is the sharing of resources between players. For example, two players managing one team in a real-time strategy game, such as StarCraft, will often have to draw off the same pool of resources to build and upgrade their units and buildings. The sharing of resources, however, can be as simple as the system used in the Contra games (and other shoot-'em-up/beat-'em-up games) where a player who is out of spare lives could "steal" a life from the other player so both players could continue to play at the same time.

### Role of the second player

The role that the second player takes upon joining a game differs from game to game. Most co-op games have the second player directly take control of another character that is usually subject to the same rules as the first player (i.e., a separate health bar). Some games, like Super Mario Galaxy, the Wii version of Prince of Persia: The Forgotten Sands and some versions of Transformers: Revenge of the Fallen, however, limit the second player to an omniscient, invulnerable (and sometimes disembodied) helper role, who then moves along with and assists the first player with abilities that he/she usually lacks. This may include the ability to attack enemies within the first player's view, typically via a targeting reticle.

## Video games with co-op mode

Main article: Software:List of cooperative video games

## Asynchronous co-op mode

Asynchronous co-op games are becoming prevalent among mobile platforms like smartphones and tablets due to their low-bandwidth requirement. Examples include Glu Mobile's Gun Bros and Gamevil's Zenonia 3. Asynchronous cooperative games upload only the character details to the server. During co-op gameplay, the server sends another player's character details, which are then controlled by the local AI.

## See also

* Player versus environment

## References

1. ↑ Kuchera, Ben (2009-01-28). "Co-op gaming is here to stay: Ars helps you find players". Arstechnica.com. https://arstechnica.com/gaming/news/2009/01/co-op-gaming-is-here-to-stay-ars-helps-you-find-players.ars. Retrieved 2011-05-31.
2. ↑ DP Interviews Howard Delman, 2010-11-08, http://www.gamesradar.com/gamings-most-important-evolutions/?page=2, retrieved July 15, 2015, "It wasn’t until Fire Truck that someone had the idea to force them to work together"
3. ↑ "The Players Guide to Fantasy Games". Electronic Games: pp. 47. June 1983. https://archive.org/stream/electronic-games-magazine-1983-06/Electronic_Games_Issue_16_Vol_02_04_1983_Jun#page/n45/mode/2up. Retrieved 6 January 2015.
4. ↑ "EA Video Games – Electronic Arts". Ea.com. http://www.ea.com. Retrieved 2011-05-31.
5. ↑ Dungeon Explorer: Warriors of Ancient Arts Interview , RPG Vault, IGN
6. ↑ Dungeon Explorer Manual, Museo del Videojuego
7. ↑ Secret of Mana hits App Store this month, Eurogamer
8. ↑ Dungeon Siege III Developer Interview , NowGamer.com
9. ↑ "A biography of video games". 2pg. Archived from the original on 27 September 2013. https://web.archive.org/web/20130927025022/http://www.2pg.com/a-biography-of-video-games/. Retrieved 27 September 2013.
10. ↑ "World Of Warcraft". Totally Warcraft. Archived from the original on 2011-07-17. https://web.archive.org/web/20110717075652/http://www.totallywarcraft.com/world-of-warcraft. Retrieved 2011-05-31.
11. ↑ "Cataclysm – Zones – World of Warcraft". Wowhead.com. http://www.wowhead.com/zones=3.3#0-3+1. Retrieved 2012-08-15.
12. ↑ "SimulView—will it work with any 3D TV?". AVS Forums. http://www.avsforum.com/avs-vb/showthread.php?t=1368078. Retrieved 2012-04-19.

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