Play alone or with up to three other friends cooperatively as Ratchet, Clank, Qwark or Dr. Nefarious. Each character brings their own unique skills and an arsenal of co-op weapons. Drop in and out of Ratchet & Clank: All 4 One at anytime, playing alongside friends or family as you fight together in spectacular cooperative battles. For the first time in the franchise, play together with friends through a sprawling, high-definition Ratchet & Clank adventure filled with humor and unforgettable moments.