There have been multiple cross-over games where the SNK cast interacted with characters created by Capcom, while some characters have been present as guest characters in other games, such as Geese Howard in Tekken 7, Kyo Kusanagi in Fighting Days, and Terry Bogard in Fighting EX Layer and Super Smash Bros. Multiple spin-off games, such as the R duology for the Neo Geo Pocket and Maximum Impact for the PlayStation 2, for example, have also been released. SNK also created original characters to serve as protagonists from each of their story arcs while still interacting with fighters from Art of Fighting and Fatal Fury, among others. The games' story focuses on the title tournament where fighters from multiple SNK games take part. The latest entry in the series, The King of Fighters XV, was released in February 2022. Ports of the arcade games and the original The King of Fighters games have been released for several video game consoles. The series' most recent arcade hardware is the Taito Type X 2, first used with the release of The King of Fighters XII.

Two King of Fighters games were produced for the Atomiswave platform ( The King of Fighters Neowave and The King of Fighters XI) before SNK decided to discontinue using it for the series. This served as the main platform for the series until 2004 when SNK retired it in favor of the Atomiswave arcade board. The series was developed originally for SNK's Neo Geo MVS arcade hardware.

The King of Fighters ( KOF) is a series of fighting games by SNK that began with the release of The King of Fighters '94 in 1994. Arcade, Neo Geo, Neo Geo CD, Neo Geo Pocket, Neo Geo Pocket Color, Sega Saturn, Dreamcast, PlayStation, PlayStation 2, PlayStation Portable, PlayStation 3, PlayStation 4, PlayStation 5, PlayStation Vita, PlayStation Network, Game Boy, J2ME, Symbian, Game Boy Advance, Wii, Nintendo Switch, Virtual Console, iOS, Android, Microsoft Windows, Xbox, Xbox 360, Xbox One, Xbox Series X/S

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