Killer Instinct is a 1994 fighting game developed by Rare and published by Nintendo for consoles. It was originally released for arcades by publisher Midway in October 1994, and ported to both the Super Nintendo Entertainment System and the Game Boy the following year. The game's plot involves an all-powerful corporation organizing a fighting tournament. The story was adapted in a limited comic book series published under the short-lived Acclaim Comics imprint.

According to Ken Lobb, during his time at Namco Hometek, the groundwork for Killer Instinct started as a Namco's fighting game project in the early planning stages, titled Melee (which itself later became WeaponLord). Aspects of Killer Instinct'''s core gameplay were influenced from SNK fighting games, namely both the World Heroes and the Fatal Fury series, particularly the characters Kim Dragon and Kim Kaphwan.Killer Instinct featured more detailed graphics and more diverse characters than any other games of its genre as well as some gameplay elements unique to fighting games of the time. Instead of fighting enemies in best-of-three-rounds bouts, each player has two life bars. The player that depletes the other player's life bars first wins the match. The game also introduced "auto-doubles", a feature which allows players to press a certain sequence of buttons to make characters automatically perform combos on opponents. Also featured in the game are "combo breakers", special defensive moves that can interrupt combos.

A critical and commercial success, Killer Instinct was followed by a sequel, the 1996 arcade game Killer Instinct 2, later ported to the Nintendo 64 as Killer Instinct Gold. After Microsoft acquired the franchise alongside developer Rare, a new 2013 game rebooting the franchise was released, serving as a launch title for the Xbox One. An emulated version of the original game is included with the 2013 game, under the title Killer Instinct Classic. The SNES version of the game was re-released on the Nintendo Classics service on February 21, 2024. Retrospective lists by various publications included it among the best fighting games of all time.

GameplayKiller Instinct plays like many other fighting games, in which the player controls a character to beat an opponent in a one-on-one encounter. The game borrows the attack set of Street Fighter and is also inspired by the finishing moves from Mortal Kombat. There are also several features that distinguish it from other franchises: A double health bar: Each player begins a bout with two bars of health. Victories are decided not by the best-two-out-of-three format common to other fighting games, but rather by the first player to exhaust both of their opponent's bars. In addition, players do not recover any health after draining the bar once. Automatic combos: Many combos are automated, after an initial button press sequence. Finishing moves: Bearing resemblance to (but being less graphic than) Mortal Kombats Fatalities, each character has at least two moves known as No Mercy (Danger Move in later revisions) to finish the opponent. Another finisher is the Humiliation, that forces the opponent to dance. Ultra Combo: Another finisher, it operates like an Ultimate Combo, though this one allows the character to deliver a long string of hits as the combo finisher instead, usually surpassing 20 hits, and can sometimes reach upwards of 80 hits. Combo Breaker: The player who is being caught in a combo may escape it by performing a breaker move. A combo can be broken at either the auto-double or linker stage. After a character performs a combo breaker, the leading edge of their health bar will flash white, enabling advanced versions of some special moves that require a different command.

Plot Ultratech is a very powerful megacorporation which organizes a tournament called Killer Instinct. Along with regular participants, experimental creatures created by Ultratech also fight in the tournament so their strength can be tested. Ultratech also discovers a technology to make bridges between dimensions, and releases a two-headed satyr-like monster called Eyedol from his dimensional prison in Limbo.

Characters

In addition to the boss Eyedol, the game offers a roster of 10 playable characters: Black Orchid, an agent working to stop Ultratech; Chief Thunder, a Native American chief sent to look for his brother; Cinder, an escaped convict who—due to a failed chemical test—garners a body composed of flame; Fulgore, a cyborg created by Ultratech to stop Jago; Glacius, an alien abducted by Ultratech; Jago], a Tibetan warrior monk guided by the Tiger Spirit; Riptor, a Velociraptor cloned by Ultratech; Sabrewulf, a man afflicted by lycanthropy; Spinal, the skeleton of an undead warrior; and T.J. Combo, a heavyweight champion boxer stripped of his title after he was discovered to be cheating with enhanced arms instead of natural ones. The Game Boy version omits Cinder and Riptor.

According to GamePro in 2010, Killer Instinct is "remembered for its colorful cast of combatants [including] a velociraptor, a sword-wielding skeleton, a creature made out of ice, and a host of other memorable characters". In 2012, Topless Robot wrote that it features "one of the most amazing and varied cast of characters ever to grace a fighting game".Jason F.C. Clarke, Ten Video Games that Should Have Gotten Toys, Topless Robot, December 3, 2011.

Development The concept of Killer Instinct dates back to early 1993, when game designer Ken Lobb sketched his concept during his time at Namco, dubbing it "Melee". He sent his pitch to Namco, but it disapproved of the concept and instead made WeaponLord in its place. Lobb took the concept with him to Nintendo of America, where he became head developer. He flew to England and joined Rare, which was planning to rival the success of Mortal Kombat. Rare founders Tim and Chris Stamper approved of his pitch. In early 1994, Nintendo signed a licensing agreement with WMS Industries, Midway's parent company, which enabled Midway to develop and market games using the early arcade-based version of the Ultra 64 platform (later to become a home console and then be renamed to Nintendo 64) and formed a joint venture company called Williams/Nintendo to market Nintendo-exclusive home conversions of these games. Killer Instinct was announced as the first of these games. The announcement came at a time when Nintendo was still known for its stance against violent video games. To avert speculation that Killer Instinct would not be as violent as the title suggests, Nintendo's director of marketing George Harrison stated that "Williams would not have entered into this deal if they thought their hands would be tied. We won't restrict them in any way". He added that Nintendo believed that an industry-standard ratings system, which was expected to be in place by the time the home version was released, would make their stance against violent games no longer necessary.

The music was composed by Graeme Norgate and Robin Beanland, their first works for Rare. Beanland and Norgate would later go on to compose the music of GoldenEye 007 (1997). Initially released in 1994, Killer Instincts arcade-based Ultra 64 hardware is different than the home console version which would be renamed to Nintendo 64 in 1996. The Ultra 64 arcade is a proprietary hardware platform co-developed by Rare and Midway, and created by Chris Stamper and Pete Cox. This hardware uses a 64-bit MIPS CPU and the Nintendo 64 file format for data structure, but not the Nintendo 64 memory media or graphics technology. The game's attract mode advertises plans to be "available for your home in 1995 only on Nintendo Ultra 64". The game was slated to be part of the North American launch lineup for the system. However, the Nintendo 64's release was delayed to December 1996 and the game was converted to the Super Nintendo Entertainment System and the Game Boy for 1995 release.Killer Instinct is the first arcade game to use an internal hard disk drive in addition to the game's ROMs. This allows it to store massive amounts of data thereby giving it the ability to have more detailed graphics than other games of this genre. Running on a proprietary MIPS based hardware system, the game uses pre-rendered sprites and backgrounds, created with Silicon Graphics computers. The backgrounds are stored as a "movie" which adjusts frames based on the players' movements. Killer Instincts R4600 processor is clocked at 100 MHz. Unlike most arcade games of the time, Killer Instinct does not display which version number of the game is being played.

In the SNES port, many of the features found in the arcade version were altered, downgraded, or removed to fit the standard 16-bit format. The graphic detail was vastly reduced, and the character sprites are smaller. The stages with a 3D panning camera were simplified into a 2D panning view using parallax scrolling for the background and a raster effect for the ground or arena, thus simulating a pseudo-3D effect. Zooming and scaling were removed. Some of the stages were redesigned. The full-motion videos that show the characters after a victory were mostly replaced by still images. Voice samples and sound effects were shortened or removed, and the music's quality is lower. Most of the characters' special moves and danger moves were retained, but some of the special graphical effects were removed. Some other modes were added, including a training mode and a tournament mode (used for multi-player purposes).

According to Peter Main, Nintendo's vice president of marketing at the time, the game had a marketing budget of $20 million.

Release The Europe, Australia, Canada, and US releases of the SNES game have black cartridge casing, instead of the standard grey shell. Nintendo made a large-scale advertising campaign.

A Game Boy port was also made, but cuts were necessary due to the system's limitations. As a result, neither Cinder nor Riptor are featured, and the moves were severely altered due to the more limited controls of the portable. Unlike the original, the Game Boy version received poorer reviews. The game's support for Super Game Boy adds some coloring, and a two player versus match by inserting a second controller.Killer Cuts, an arranged soundtrack CD featuring original music from Killer Instinct, was released as a pack-in for the SNES release of the game, included with the first 100,000 copies sold in the US and the first 20,000 copies sold in Canada. The soundtrack was digitally re-released as part of a double-album set with the Killer Instinct: Season One soundtrack on October 14, 2014.

A digital port of the game's arcade version, titled Killer Instinct Classic, is available as part of the "Season One Ultra Edition" of Killer Instinct for the Xbox One. This port was developed by Code Mystics and published by Microsoft Studios, and includes a number of additional features, such as a new training mode, unlockable character sprite galleries and cutscenes, several visual filters, and the ability to play the game in both its original 1.4 revision and its later 1.5D revision. An update in late December 2014 added online multiplayer functionality. The SNES version was re-released on the Nintendo Classics service on February 21, 2024, marking the series' first appearance on a Nintendo home console since Microsoft acquired Rare.

Appearances in media An arcade cabinet of the game can be spotted in the 2002 Dark comedy Comic Book Villains.

Reception