The gameplay is roughly the same as in Mega Man: The Power Battle, as it keeps the controls, stages, and weapon-copying. There are, however, several new additions. The playable characters are Mega Man, Proto Man, Bass, and Duo, with Duo being a new addition to the cast. The four characters feature different attributes and abilities. When playing with two players, only the player who lands the finishing blow will acquire the Robot Master's weapon. (wikipedia.org)