Co-Op in Doom 3 for Xbox

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Since I herd that Doom 3 for the Xbox was going to have co-op I have been waiting for the game, I just checked Best Buy and they have the game only problem is that thoes little stats at the bottom say that it's one player. However if you look up on the box there is a picture and it says "play deathmatch, team deathmatch, or co-op" so I'm a bit confused. Anyone played the game yet?