Buy Assassin's Creed II at Amazon, receive $10 Video Games credit

Order Assassin's Creed II and get $10 off a future video game purchase. The promotion code will be applied directly to your Amazon.com account up to two (2) business days after your product ships. To redeem your reward, add a Video Games item sold and shipped by Amazon.com to your shopping cart and proceed to checkout. The discount will be visible after you have begun the checkout process. Offer valid when shipped and sold by Amazon.com. This offer will be extended to all existing pre-orders. Amazon reserves the right to change or terminate this promotion at any time. Offer valid for one purchase per customer.

Link

I'm not sure if you could combine this with the $40 off of $80 Amazon promotional from a while ago.