normally, clank rides on ratchet's back, acting as a jet-pack or similar device. occasionally, however, clank becomes a playable character when ratchet is unable to explore certain areas. clank can control "gadgebots", smaller robots similar to clank, who perform certain actions for him. racing, in the form of hoverboard races, appears in the game. some racing missions are necessary to progress in the game, while others are optional. one level of space combat and a level of flying through the air shooting tankers is also present. mini-games to unlock doors, extend bridges, or elevate platforms appear in most levels.