No coop, no multiplayer split screen, thats making it Fail to compete with Gears of War 2 and Halo 3. The good thing is the graphics and physics are awesome the wind playing a factor in a FPS is cool changes the way you play and use grenades. This game is building a good foundation for Killzone 3 but by then it could be too late to compete with the heavy hitters in comp. GTA4 added all that new shit too with dope graphics but it still failed to keep people on it, cuz all the dope graphics in the world wont mean shit if the gameplay is no good and frustrating.