Rocket Riot is an arena shooter in which the player controls a jetpack-powered character wielding a rocket launcher. The character can be moved in any direction using the left joystick, while the right joystick is used to aim the weapon, by choosing the angle and the power of the shot. Players move in a closed arena, where every object is destructible with rockets. This allow players to create shortcuts, hide themselves, but also sometimes release power-ups that can boost the player's attack or defense, create a silly effect (for example making the rocket launcher fires basketball balls or skulls) or be a trick power-up dangerous for the player (for example replacing the rocket launcher with a fake gun that doesn't shoot but release a small "BANG" flag).
Although the main action is to kill others players (played by AI or others players), the game offers multiples modes with different goals. Some are for solo play only, some can be played in multiplayer locally (same screen or using a LAN link between consoles), and others are only playable through Xbox Live :