4-Player Cooperative MayhemProduct InformationIn Ratchet and Clank: All 4 One play together online or offline as thegreatest heroes (and villain) in the Ratchet and Clank universe formthe unlikeliest team in this hilarious adventure.  We find ourheroes in the midst of a dilemma of intergalactic proportions when Dr.Nefarious' latest evil plan goes awry leaving Ratchet Clank Qwarkand Nefarious himself caught in the snare of a powerful and mysteriousmachine.  Join Ratchet Clank Qwark and Dr. Nefarious asthey work together to unlock the secrets of their mysterious kidnapperand escape to a vast forgotten pla in this action-packed installmentof the Rachet and Clank series.Product Features Four Player Cooperative Mayhem - Playalone or with up to 3 other friends as Ratchet Clank Qwark or Dr.Nefarious each with their own unique skills and an arsenal of co-opweapons. Play Together Side-by-Side or Online -Drop in and out of Ratchet and Clank: All 4 One at anytime playingalongside friends or family as you fight together in spectacularcooperative battles. A Cinematic Experience 4 All - For thefirst time in the franchise play together with friends through asprawling high-definition Ratchet and Clank adventure filled withhumor and unforgettable moments.Specifications Players:  1-4 Players Network Players:  1-4 Players Required Hard Drive Space: 2.5 GB HD Video Output:  480p 720p(requires cables and HD patible display) Compatibility:  Dual Shock 3;Headset 3D Game (Accessories sold separately) PlayStation Network Features:  Multiplayer;Trophies; Voice ChatNote:  Access to online features andservices requires a PlayStation work account and an Online Passvoucher that can only be redeemed once.  Online play anddownload requires broadband Inter service; user is responsible forassociated fees.>