Ubisoft have announced that Assassin's Creed II sold 1.6 million copies worldwide in its first week according to estimates. This is an increase of 32 per cent compared to first week sales of the original. Granted the installed base of both Playstation 3 and Xbox 360 has grown significantly in two years, but it is still a nice feat in the back waters of Call of Duty: Modern Warfare 2.