Microsoft recently announced its new 'Games With Gold' program which offers 2 free monthly Xbox 360 games to Gold subscribers, starting July 16 and ending at the end of the month, Assassin's Creed II is available for free to all Gold Members.
Xbox LIVE Gold subscribers now get access to 2 free games a month, the first free game on the 1st of each month, and the second game on the 16th. Last month Fable III was being offered as a free download, and this month Defense Grid and now Assassin's Creed II.
Halo 3 and other triple A title games are expected to make the Games With Gold list pretty soon, so keep checking the Xbox LIVE Marketplace every month. In the meantime however, go and download Assassin's Creed II for free right now!