Ubisoft’s free game redemption site for those who purchased the Assassin’s Creed season pass is live. Once you identify which system you’ve played on, you can redeem one of six games. Before you zip through the terms and conditions, there’s something of which you should be aware. By accepting the free game, you are releasing Ubisoft from liability related to the problems with Assassin’s Creed Unity and the devaluation of the season pass as a result of the Dead Kings DLC going free. Source