Free is always good. The Uplay Shop has got a neat little promotion going on when you buy a copy of the Witcher 3: Wild Hunt on the PC.
Picking up a PC digital copy of The Witcher 3: Wild Hunt on the Uplay Store will grant you a free download code for one of the following games of your choosing:
Assassin’s Creed IV: Black Flag
Assassin’s Creed: Rogue
Far Cry 3
Just a reminder, that the games will only run through Uplay on the PC. The Witcher 3: Wild Hunt is out now on PC, PS4 and Xbox One.