Amazon has grouped all their coupons together on one page, which I have added to that Make the Most of Amazon permanent post up at the top of the page. There are a TON of great toy/game coupons right now, so be sure to check out those deals.
Here are some of the games with the coupon included. The coupon will show on the page, just below the price of the item. You just need to make sure you click that coupon to get it credited.
It's never too early to start in on the Christmas shopping.