TeamXbox writes: "While it's quite clear that Call of Duty: World at War is definitely not Call of Duty 5, just where it lies in the history of the entire franchise remains unclear. Reverting back to the World War II setting doesn't seem like something that would advance the franchise to the future. It's pretty clear that "modern warfare" is where it's at, anyway. And it's not developed by Infinity Ward, the true home of Call of Duty, but rather by Treyarch, which has done spinoffs of the series before with mixed results. So what is it? A spin-off or a true sequel? A standalone expansion pack or simply CoD4 with new art?"