#20: Tom Clancy's Rainbow Six Vegas 2
Why It's Great: What happens in Vegas usually doesn't consist of men with guns rappelling down the side of the MGM Grand, tossing smoke grenades as they blindfire terrorists, but thankfully we can live out that fantasy again and again with Tom Clancy's Rainbow Six Vegas 2. With unprecedented squad-based tactics and adrenaline fueled action from the moment you pick up the controller, you'll never quite look at Sin City in the same light.
