Summary: The single player seemed kind of short in 3, haven't finish 2's single player yet; game play was good in single player (controls seemed backwards yet you can flip to more usual FPS button lay out) mode on both 3 and 2, with seeming well put to together story line and cut scenes yet multi-player may feel a little off for serious FPS players. And 1 was antiquated as far FPS games goes, like playing duck hunt all over again.
Summary: I got this because I had no shooters on my PS3 and wanted to try these out. In my honest opinion these games are boring as all hell. I am not the kind of player that thinks Multiplayer alone makes a game 5 stars. The single player in these games are awful, and I'm not a big multiplayer person, so I personally did not enjoy this trilogy.
Summary: The dlc code is expired, that's the reason i bought it new. You are better off buying a USED**** copy. I talked to a playstation rep and they said, there's nothing they can do if the code is expired, somehow i doubt that. Bought the game after the expiration date, what bs... Anyways, so far Killzone 3 out of the trilogy isn't really matching up with my expectations, sub par graphics and weird aiming system provide a lackluster feel.