Download the latest stable MUGEN 1.1 build. Do not use 1.0; Black World characters use heavy screen effects (transparencies, zooms, HD sprites) that will crash older versions.
The "KOF Black World" series, particularly the seminal KOF Black World 2005 , is a fan-made MUGEN compilation that has achieved near-mythical status. kof black world mugen top
Find a reputable, updated version of the game (often linked in YouTube videos from trusted MUGEN creators, similar to this YouTube channel ). Download the latest stable MUGEN 1
The story follows a ragtag group of fighters who realize their world has been rewritten: Orochi Kyo kof black world mugen top