Xbox One Titles
Xbox 360 Titles
UK resident? Use UKOCT15OFF to get the same discount. Gamefly's Coupon of the Month for October 2014 is currently at a decent 15% off. It works on most digital titles, except certain major releases where prices may be more restricted.
Each week, GameFly has various types of sales with different themes from their PC download catalog and the Gamefly Coupon of the Month can often be stacked with other coupons or be applicable for the sale's bigger-than-usual instant savings.
P.S. You'll need to login and head to the checkout page to use and see the discount from the coupon. Look for the section "Apply Gamefly Coupon" just below the billing address. If you were wondering where you enter the code for some Gamefly discounts, now you know.