» Thu Jun 18, 2009 8:53 pm
In my opinion you should try them both and keep them if you like them trade them in if you don't.
Killzone 3: better graphics (rock steady fps), better gameplay, better mp connection (dedicated servers)
Crysis 2: More unique gameplay (suit powers and sand box), better story (more interesting)
Overall: I think Killzone 3 is a more complete/finished product, but Crysis 2 is no slouch. They are both very different games, and are both very fun. They 're both a ton of fun in my opinion, and I like them both because they take a lot more skill than COD.
If you want to trade in your game do it through amazon, you'll get a lot more money back.