For those lucky XBA members with a restaurant nearby, all you have to do is purchase a large drink either by itself or with a large combo. The drink cup will have a game piece. Those of us that do not have a restaurant within 100 miles or more must rely on the great XBA community to provide us with codes or send a letter via snail mail to the address on this site to get a free code:
http://www.jacksgotgame.com/
The codes can be for many things. Those obtained via drink cups can be free Jack in the Box menu items or a Gamestop coupon such as:
extra 40% trade credit toward the above listed games
extra 25% trade credit on anything
5% or 10% off preowned game
buy 2, get 1 free preowned games
Both methods can get a free Xbox 360 game DLC code such as:
GOW 3 Green Liquid Metal weapon set formerly exclusive to MS employees
Battlefield 3 "fire within" avatar outfit
Assassins Creed: Revelation outfits or themes
There is also prize drawings for codes entered online, including:
$5,000 Gamestop shopping spree
Gears of War 3 Xbox 360 console
4 GB Xbox 360 console
copies of the games listed above
So now its time for the XBA community to go get codes and win free stuff! As you may have gathered earlier, there is not a single Jack in the box within 100 miles of me, so I would very much appreciate a code donation for bringing this information to your attention. If you feel the need to trade the code, check out the code trade thread to see what I have to offer:
http://xboxamerica.com/threads/code-requesttrading-thread/page/15