Ubisofts XIII Days to XmasUbisoft and Microsoft are teaming up for a special holiday themed contest related to its conspiracy-driven first-person shooter for the Xbox, XIII. Xbox Live gamers have a chance to win the XIII in the final 13 days leading up to Christmas. Beginning today (December 12th) through December 25th, Xbox Live gamers who log on for a total of 13 hours will be entered into a contest to win a copy of XIII. For more information the community section of the official site for XIII. XIII is rated "M" (Mature) and retails for $49.99 on the Xbox, PlayStation 2, and GameCube, and $39.99 on the PC.