Supremacy MMAXbox 360 Xbox 360, 2011 Supremacy MMA Western only. This game was never released in Japan on the Xbox 360. PlatformXbox 360 ReleasedNorth America, 20 September 2011; Europe, 23 September 2011 Released in JapanNever Publisher505 Games Mediaphysical (assumed) Releases North America Supremacy MMA 20 September 2011, 505 Games, physical (assumed) Europe Supremacy MMA 23 September 2011, 505 Games, physical (assumed) Add to my collection Open in Tana