Killer Instinct is a 2.5D fighting game developed by Rare, published by Nintendo and manufactured by Midway. It was originally released for arcades in October 1994, and ported to 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.

A fighting game is a genre of video game that involves combat between two or more characters. Fighting game combat often features mechanics such as blocking, grappling, counter-attacking, and chaining attacks together into "combos". Characters generally engage in battle using hand-to-hand combat—often some form of martial arts. The fighting game genre is related to, but distinct from, the beat 'em up genre, which pits large numbers of computer-controlled enemies against one or more player characters.