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. The series was developed originally for SNK's Neo Geo MVS arcade hardware. This served as the main platform for the series until 2004 when SNK retired it in favor of the Atomiswave arcade board. 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. The series' most recent arcade hardware is the Taito Type X, first used with the release of The King of Fighters XII. Ports of the arcade games and the original The King of Fighters games have been released for several video game consoles. The latest entry in the series, The King of Fighters XIV, was released for PlayStation 4 and Microsoft Windows in 2016. The next game, The King of Fighters XV, is set to be released in 2022.
Relation to the Dead or Alive series
As far as connections with the Dead or Alive series go, Mai Shiranui (originally a Fatal Fury character that has been more well known for her role in The King of Fighters) was added as DLC (no longer available) to Dead or Alive 5 Last Round in 2016, and she returned in 2019 as a DLC for Dead or Alive 6, this time with Kula Diamond from the same series also being added, and unlike the previous game this time they have a very short story segment where they fight Kasumi and Nico respectively. Also, for the mobile game The King of Fighters All Stars, Kasumi, Marie Rose, Honoka and Nyotengu were added as part of a limited time collaboration with Dead or Alive 6, a lower number of characters than other collaborations the mobile game has had, but at the same time they all have 2 costumes, their default one from DOA6 and a more revealing one from the same game.