This is probably the first game I have ever pre-ordered, ever. I enjoyed COD2, I guess I have a deep inner need for shooting up troops with a snipe rifle every now & then. Its normal, I mean who doesn't, right?? Hehe .. Yes. As the picture suggests, this game is based around the world war and involves being a part of an emulation of it, a pretty realistic, in-depth emulation I would say. The single player goes through a story of sorts following teams and gaining merits for completion of tasks, also there is a multiplayer part, which is what I enjoyed most about COD2. The basic premise is run about shooting people, (thats right, not zombies or aliens or robots that turned bad, just people, just like in modern day America).
The options include a Deathmatch where every man is for himself, a Team Deathmatch where strangely enough you're part of a team, there are also other games like 'capture the flag' and 'defend headquarters' but they are a bit too tactical for my liking.
The major differences between Version 2 and the new one are that now you have a number of different ranks of soldier with specific roles and tools/weapons that aid those roles. Eg; A medic carries a shotgun (and medicine) for closed quarters shooting, a scout carries a snipe rifle and arranges air strikes, this makes the game more interesting but also harder. There are also now vehicles to climb into, fun but pretty dangerous.
Other smaller differences include soldier promotions based on their number of kills in a given game, having to shoot somebody multiple times for them to die varying on your weapon and aim. The snipe rifle in particular is much harder to get a precise aim from compared to the old game, though this is probably a good thing, it will take some getting used to.
Official Website: www.callofduty.com
If you decide to play on Xbox Live: my gamertag is Jun6lee, feel free to message me and tell me how crap I am at it.

Can I not just message you here to tell you how crap you are at it? :-P
No. Because I won't notice the message or reply.
Uh.... Shit'