Please choose from the relevant download links below and be sure to get the correct version.
Retail boxed game
Patch 1.06 - June 4th, 2013
Patch 1.05 - April 18th, 2013
Patch 1.04 - March 13th, 2013
Patch 1.02 - January 16th, 2013
Day one patch - November 22nd, 2012
Ubisoft Store and other digital retailers (excluding Steam)
If you have purchased the game directly through Steam, the latest patch will automatically install when you launch the game.