IGN: Call of Duty: Modern Warfare vs World at War

Call of Duty 4 was last year's greatest game. Or at least that's the consensus that we IGN editors came to during our end of the voting. Now we have a new entry in the Call of Duty franchise known as World at War. It comes to us from the hands of those who churned out the maligned Call of Duty 3, but this time Treyarch has managed to make a highly exciting and fully realized wartime first-person shooter. But is it enough to topple last year's greatest production?