If you don't already have it, get your ass to the store and pick it up.

User Rating: 9.5 | Call of Duty 4: Modern Warfare X360
Call of Duty 4 is the best FPS I have ever played. Let me just start by getting this out of the way, the only bad thing about the game is that the campaign is too short. Other then that the game is a must have for any fan, Call of Duty fan or not. This is my first COD game, and it's one of my favourites. The realism of the game is just breath taking, plus the variety of weapons and options you have, this accumulates to be a terrific game. The campaign is so intense, with Russians everywhere you go. You play as a soldier from the US and from the UK. You must use strategy and skill in order to kill all the targets and save the country.

The online is also very impressive. You rank up as you gain xp, which you get from killing me and completing challenges. As you rank up, you unlock more weapons and perks. Also, another very impressive aspect of the game is if you choose to be a sniper, you have the best possible camo for the map in which you're playing. For example, if you are playing on a map with a lot of grass, you have a ghily suit, which is grass camo and it is almost impossible to spot you, so it makes the sniper job very precise and real.

Concluding this review, COD 4 is an amazing game, and like I said before, if you don't already have it, get your ass to the store and pick it up.