You're looking at a screenshot of a Wii game that was in heavier rotation last month than just about anything else on the system. That's "Call of Duty: World at War" for the Wii, which was played more than six hours per player in March. Think on that and look at MTV Multiplayer's newest listing of Wii game usage. They're tracking more than 50 games as played by a pool of over two million Wii owners. Forget sales for a moment and find out just how much people actually play these games.