the game has a rigorous digital rights management (drm) system based on tagès. it forces users to activate their game online once by submitting an activation code after each installation on a different computer or a significant hardware change. the activation can be performed on any pc with an internet connection. it can only be activated three times by default and unlike many other drm systems, it does not support revocation of already used licenses. further licenses can be requested free of charge by contacting ubisoft.