Get Three Popular Xbox 360 Games for the Price of Two at Amazon. Many of the eligible games are very popular titles, such as Halo 3, Assassin’s Creed, Mass Effect, Gears of War (2-Disc Edition), Street Fighter IV, and more. The complete list of eligible games is available here. Simply add 3 games to the cart and the discount will appear during checkout. Here is a screenshot for your reference.