The superhero universe is embroiled in civil war, and it's time for players to choose sides in Marvel Ultimate Alliance 2. The game is a mission-driven action-adventure with a focus on small-squad combat, viewed from an isometric perspective. As in Marvel's earlier 3D action games (such as titles in the x-men Legends series, as well as the original Marvel: Ultimate Alliance), role-playing aspects also influence the adventure, with gamers choosing which heroes to control, and how to improve their various superpowers and abilities as they gain experience by defeating enemies and accomplishing goals.