Sony brought out the big guns at their press conference at Gamescom in Cologne, and among them were Insomniac's Ted Price who came on stage to announce PS3 exclusive Ratchet & Clank: All 4 One. The game will feature a co-operative mode for up to four players who take on Ratchet, Clank, Quark and Nefarious. Have a look at the first screens below.
