Pac-Man World 3 takes place as Orson teleports him to fight Erwin, his army of robots and monsters in Pac-Land and the Spectral Realm. Erwin plans to use spectral energy from the realm to power his robotic army and rule the world.
Gameplay involves using punching, Rev Rolls, Butt-Bouncing and new Power Pellets to defeat Erwin and his minions. Players also pilot Toc-Man in battles against the robot army.