Departing from Action RTS formula of the previous Kingdom Under Fire series, Circle of Doom makes full use of the Xbox 360's power to present adrenaline-pumping action with stylish combat maneuvers and eye-popping effects. Players explore randomly generated vast dungeons and battle monsters swarming the screen in thousands and attacking from all directions along the floors, walls, and ceilings of the dungeons. As the game progresses, the heroes will find increasingly devastating and spectacular ways to defeat massive enemy forces in the forms of new abilities and weapons, or even create their own arsenal by combining the existing ones.