SINGLE PLAYER:
The single player of this game is thrilling and exciting but at the same time i feel that it's quite short. The variety of missions and the storyline is a plus point which will keep you glued to the screen for quite a while. The single-player is almost shockingly short. If you've been keeping up with this style of game, you'll probably shoot your way to the credits in under five hours. While you can raise the difficulty to give yourself more of a challenge, the main thing this does is make the enemies frustratingly deadly, which sort of detracts from the fun. While it may have a lack of single-player quantity, it makes up for most of it with its quality. The game tells its story from multiple perspectives, and you'll play as a new British SAS operative as well as a US Marine. The campaign takes you from a rainy night out at sea on a boat that's in the process of sinking to a missile silo where it's on you to save millions from an unsavory nuclear-powered death. Along the way, there are plenty of jaw-dropping moments where you'll look around the room for someone to whom you can say, "I can't believe that just happened."
MULTI-PLAYER:
The best feature about this game is the multi-player which really boosts the life-span of this already fantastic game. Up to 32 players can play at the same time. You start out with "rank I" and slowly start rising through the ranks. As your rank increases, new and better weapons are unlocked, along with the availability of new perks and also new game-play modes such as "team death match", "search and destroy", "headquarters". My personal favorite is the "headquarters". All these different things provided in multiplayer will surely keep you entertained for a long time. This is the reason why COD 4 is the most popular game on Xbox-Live. So you better get online and try out its multiplayer which is an entirely new experience.
