Dark Sector was pretty wack to me. I would suggest getting one of the Ratchet & Clank games. They're pretty solid shooter/platformers.Little Big Planet is also a must play if you don't want another grimy game.When you are ready to go into some dark shit, God if War 3, iNFAMOUS and Killzone 2 are great for that.Also, if you don't have a 360 (which I'm guessing since you got Dark Sector), get Batman, Fallout 3 and Street Fighter IV.