A new GfK Chart-Track chart reveals the 20 bestselling full-priced PC games in the U.K. for the week ending March 16th. Three new titles enter this week: Farming Simulator 2013 at #18, Sniper Ghost Warrior 2 at number six, and the new number one entry is StarCraft II: Heart of the Swarm. On the all platforms chart Sniper Ghost Warrior 2 enters at number four, Heart of the Swarm at number three, and God of War Ascension at number two, while Tomb Raider retains the top spot.