I was somewhat surprised how much I am enjoying this game. I own the previous installment Rainbow Six 3 and Rainbow Six 3: Black Arrow. They are both very well put together games, but the a.i. intelligence was lacking. When I first put this game in and one of the first things they did was set a trap for me and my team I knew I had a keeper... Everything about this game is an improvement, the graphics, the sounds, the a.i., the gameplay. You name it, it's better! Even though I haven't been able to play on live as I have for the previous ones I have heard it is also way better... PICK THIS GAME UP! You will not be dissapointed.