The gameplay revolves around Nevin's ability to transform into three forms: a sword form for melee combat, a cannon form for gunplay, and a stealth form for sneaking past enemies. The player can instantly switch between these forms during combat, allowing for various combinations that reward plasma points. These points can be used to upgrade Nevin's life energy, new moves, or better weapons.
Besides combat, the game features basic switch puzzles and rhythm-based mini games. One notable feature is Time Dilation Mode, which can be activated near enemies. Completing this mini game successfully launches a powerful attack.