If you download the uPlay client (Ubisoft's proprietary not-Steam client), you can grab Prince of Persia: The Sands of Time, Tom Clancy's Splinter Cell, Rayman Origins, The Crew, Beyond Good and Evil, Far Cry 3: Blood Dragon, and Assassin's Creed III for free today as part of their Ubi 30 giveaway. It is ending soon, so if you're interested, act fast.