Ubisoft has announced sales performance for Assassin’s Creed today and they have several reasons to be happy with their newest franchise.

The games’ sales have greatly outstripped their expectations and currently ranks among the 2 or 3 best-selling games for the PS3 and Xbox 360 in the vast majority of geographical regions. The game has sold over 2.5 million copies worldwide in its first two weeks in the wild and is the fastest-selling new video game intellectual property in the US ever.

Yves Guillemot, Chief Executive Officer of Ubisoft: “With the exceptional performance of Assassin’s Creed™, the fastest-selling new video game intellectual property in the US ever, Ubisoft’s teams have once again demonstrated their expertise in creating and promoting major brands. These regular-sequel franchises are a source of very high profitability both in the short and long term. Drawing on its strong internal development capacities, Ubisoft is currently in an ideal position to continue to develop numerous new creations – an essential condition for winning market share and ensuring strong growth going forward.”

Ubisoft now believes that it will sell at least 5 million copies of Assassin’s Creed in 2007-08 compared with its previous estimate of ~3 million.

[See also: Assassin’s Creed gallery]