Get Thief, Batman Arkham games, Tomb Raider, many more for cheap in Amazon's Mayhem sale

Amazon is currently holding its huge Digital Games Mayhem sale. The sale will last until the end of May, and offers as much as 80 percent off of many of its PC game codes and downloads. Some good deals you might be interested in include Thief, down from $50 to $25 (or you can get the Master Thief Edition for $27), Tomb Raider, down from $20 to $8, and the Batman Mega Bundle, which includes all three of the released Arkham games, down from $90 to $22.50. Other highlights include Sleeping Dogs, do...