Digital Games Summer Sale, offering discounts on its lineup of PC and Mac games. Like, all of its games. Almost 900 titles are on sale, including the Borderlands bundle, with the first and second games and the Borderlands 2 season pass for $22, normally listed at $100.
Other deals include Assassin's Creed 3 for $13, Assassin's Creed 2 for $5, Amnesia for $3, Dead Space 3 for $20, Rayman Origins for $7.50 and about 895 more games. Separately, Amazon's indie store is still live and kicking, and right now purchase any indie game and get some free games to go with it. Take your pick!