505 Games and Kung Fu Factory have announced that there will be a pre-order bonus for Supremacy MMA for GameStop customers. The game will release on PS3 and Xbox 360 on September 20.

“505 Games and Kung Fu Factory today announced that GameStop customers who pre-order a copy of the no holds barred mixed martial arts fighter Supremacy MMA will receive both the exclusive playable level ‘The Glass Slipper’ and the chance to expand their roster and play as undefeated Strikeforce icon Shane Del Rosario,” read the release.