This is certainly the best First Person Shooter (FPS) that I've ever played. The AI is amazing. They do things you would never expect an AI to do. They do things like having one guy shoot suppressive fire over your head while another comes around behind you. There are very few places in the game where you can count on the fact that no one can come up behind you. As I've basically said, the game play alone makes this game worth playing. And, though I haven't yet beaten the game, the story seems to be entertaining also. There are some drawbacks, however. Because the majority of the game is so well put together, the flaws are fairly noticeable (but they are all very small and definitely don't detract from the the enjoyment). One of the flaws I've noticed is that vases don't seem to break. I've shot them and while they're not just scenery and they do fall to the floor, they still don't break. I don't know about you, but I've never seen a vase in real life that could take a shell full of buckshot and fall to the floor intact. The other major drawback is also one of the good things. The game looks amazing. Unfortuantly, this means that it takes a very powerful computer to play well. I know no one else who has a computer that can play the game. All in all, if you have a computer that can play the game, it is well worth the price (that is, I paid the $50 that most computer games are when they are first released).
Edit: I was wrong about the vases. The vases in single player do break. The vases in multiplayer do not. They are objects to be avoided otherwise you will kick them and give away your position more readily
Edit: I was wrong about the vases. The vases in single player do break. The vases in multiplayer do not. They are objects to be avoided otherwise you will kick them and give away your position more readily