(Online Interactions Not Rated by the ESRB) Combat Revolved! Campaign across distant worlds either solo or with four-player online co-op, taking no prisoners in your wake. Challenge your friends (and your enemies) to see who's the baddest ball on the planet in no-holds-barred 16-player multiplayer arenas with freaky characters or with your own Xbox 360 Avatar! Or really push your limits and try your hand at Invasion Mode where combatants create the very worlds that they wage war in...