If you own a PS3, chances are you love youself some Killzone. If you've been having trouble kicking those cravings, good luck, because Killzone 3 Multiplayer is now available on PSN. Killzone 3 Multiplayer is free-to-play at first, but once you rank as a Sergeant, you'll have to shell out $15 if you want to continue and unlock trophies. Sneaky, Sony!
