User blog comment:Bovell/UPDATE: Battlefield 3 demo not yet confirmed/@comment-3062440-20110422181411/@comment-3479148-20110501190638

Source is the same engine Valve's been using since 2004(3?) Their games have been critically acclaimed and so on. It's not a matter of engine, it's a matter of gameplay. Just take a look at Crysis 2. It uses an advanced engine, but the gameplay is horribly different. It's not (at least partially) open-ended, it lacks a bunch of drivable vehicles and the multiplayer is like MW on steroids. I must say, it looks nice, and it's probably a great game, but not what defines Crytek's games.

Anyway, back on topic, MW3 is probably going to have the same business model as every CoD since MW2. You're gonna have to pay for new maps, and if Activision really fucks it up, it's gonna go WoW with paid subscriptions.