Call of Duty 5: World at WarCall of Duty: World at War is a first-person shooter video game for Microsoft Windows, PlayStation 3, Wii, Xbox 360, Nintendo DS, and PlayStation 2 gaming platform. The latest sequel of Call of Duty, frequently acronym as COD 5: WAW, is the fifth installed in the COD video game series, and is developed by Treyarch and published by Activision.

A beta version of the game’s online multiplayer mode was released for the Xbox 360 on October 10, 2008. However, the players and gamers require an invitation code to join the online beta game, which is set in the Pacific theater and Eastern front of World War II. Thousands of beta code have been gave away via various channels, and most of the COD beta codes release sites no longer have any code left for late comers.

For eager gamers who can’t wait until the Call of Duty 5: World at War game is shipped in North America on November 11, 2008 and in Europe on November 14, 2008, here’s a trick to get COD: WAW beta code that allows the COD fans to download the beta version of the game, and join in the action (and the fun) early.

Visit the following GameStop site’s URL:

http://www.gamestop.com/gs/landing/codwwbeta/default.aspx

The page is actually for gamers who have pre-ordered and reserved a copy of Call of Duty: World at War game. But it seems like, with a little bit of luck, the COD beta access code will be sent to everyone who requested the serial key.

Select the platform you want to play COD: WAW on – only Xbox 360 and Windows PC have beta access, fill in your email and name. Skip the Transaction ID field though, as you won’t have one unless you made the purchase through GameStop. The click Submit button. An confirmation page saying “Thank You! You will be contacted soon with information on how to access the beta.” should be displayed.

If you’re lucky enough, an 25 digit beta access code will be mailed to your mailbox. The beta code can be redeemed to download Call of Duty: World at War beta from the Redeem Code section on the MarketPlace bBade on the Xbox 360 Dashboard. For gamers who receive 20 digit code, go to www.firsttofight.callofduty.com to enter the access code instead. An account with callofduty.com will be created (for those already have an account, put in the same email address used to sign into the box). The download is about 900MB in size, with the downloads for COD Beta PC version just been released on Oct. 28.