True, but since we are talking about engines... imo CryTek is atm the probably best shooter engine, especially concerning gameplay possibilities. UE3, from what I've seen so far, is just a visually beefed up UE2.5. It doesn't look as if it would open up new possibilities. CryTek offers better terrain, better vegetation and nice physics. Unfortunately, as spraduke said, it's too demanding for todays computers.