Mega Monster Battle: Ultra Coliseum DX: The Gathering of The Ultra Heroes! (大怪獣バトルウルトラコロシアムDX ウルトラ戦士大集結 - Dai Kaijū Batoru Urutora Koroshiamu DX Urutora Senshi Dai Shūketsu Mega Monster Battle: Ultra Coliseum DX: The Gathering of The Ultra Heroes!?)is an Arcade Action game from the Ultra published by Namco and Bandai and focuses on the Ultra Galaxy series. This game had created the Data Cardass version, which is Mega Monster Battle: RR.