. These "Mugen" games are fan-made projects that allow creators to mix and match hundreds of characters from different fighting games into a single, often highly customized, mobile or PC experience. The Story Behind KOF Jemm 9029 The name "Jemm 9029" is associated with a content creator jemm9029_2001 who shares customized APK versions of and other Mugen builds for Android devices. Customization : Unlike official SNK releases like The King of Fighters XV