"Online retailers Amazon.com and Gamestop are going head to head this Halloween with competing offers on the latest video game releases.
Gamestop.com is offering a 15% off coupon on any video games (in-stock) priced $29.99 or more. Free shipping is also offered with this deal. The Gamestop offer expires on October 31, 2010.
In response, Amazon began offering a 15% discount promo code on select game titles as well. Over 300 games are featured as part of this online sale."