At Amazon, purchase a qualifying Square Enix title for Xbox One
and receive a download code for a free Square Enix Xbox 360 game
. (Eligible games are marked.) Prime members qualify for free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $4.98.) Depending on which free game you pick, it's a savings of at least $5. Choose from Dungeon Siege III, Just Cause 2, Kane & Lynch 2: Dog Days, Supreme Commander 2, and Deus Ex: Human Revolution.
Note that you'll be emailed a redemption code within two days of shipment; you can redeem it here