The King of Fighters '99: Millennium Battle, also called KOF '99, is a 1999 fighting game developed and published by SNK for the Neo Geo MVS arcade and home consoles in 1999. It is the sixth installment in The King of Fighters series following The King of Fighters '98, introducing a new story arc known as the "NESTS Chronicles" which is centered around a young man named K', who is formerly associated with a mysterious organization known only as NESTS. The game introduces several changes to the established KOF format, most notably an assisting character labeled "Striker". The game was ported to the Neo Geo CD and the PlayStation. Dreamcast and Microsoft Windows versions were also released under the title The King of Fighters' 99: Evolution whose stages were remodeled in 3D.