COD4 is by far the best multiplayer game I have played. It's online component is simply addictive and engaging. The shooting mechanics in the game are spot on and the perk features add a whole new dimension. COD4 also feature an RPG like leveling system, which keeps you coming back for more and more. Easily, this game is worth the price of admission. $59.99 is a truly a steal for such a masterpiece =]
