Assassin's Creed II now free on Xbox Live
assassin's creed 2 free

As part of Microsoft's  "Games with Gold" Assassin's Creed II is now free to all Gold members until July 20th. The following Assassin's Creed content is also on sale:

Content Normally* Sale Price*
Assassin’s Creed $19.99 $14.99 USD 
Assassin’s Creed II Sequence 12: Battle of Forli 320 214 MSP
AC II Sequence 13 : Bonfire of the Vanities & Secret Locations 560 375 MSP
Assassin’s Creed Brotherhood $19.99 $14.99 USD
ACB – The Da Vinci Disappearance DLC 800 536 MSP
Assassin’s Creed Revelations $19.99 $14.99 USD
ACRs — The Lost Archive 800 536 MSP
ACR — Mediterranean Traveler Map Pack 800 536 MSP
Assassin’s Creed® III Season Pass 2400 1600 MSP

New free titles will be avaliable on the 1st and 16th every month.

Source: Major Nelson