Killer Instinct began as a 1994 arcade fighting game from Rare, and the series returned in 2013 as an Xbox One launch title. In every version the announcer names each combo rank, with Ultra Combo reserved for the long finishing sequence that ends a match while the music keeps playing. Clips of that shout spread through fighting game streams and combo videos, where it became shorthand for a flawless, extended finish that leaves the opponent no chance to recover.