Activision and developer Treyarch have sent word that the Xbox 360 exclusive online multiplayer beta for Call of Duty: World At War officially launched today. While supplies last, fans can guarantee themselves a token by heading over to pre-ordering the game at North American GameStop outlets, or online at GameStop.com. Additionally, a limited number of tokens will be given out to registered members of CallofDuty.com.

The Call of Duty: World at War multiplayer betas will provide players with an opportunity to play as U.S. Marines, German Wehrmacht, Japanese Imperial Army and Russian Red Army factions in a variety of game types (Team Death Match, Free-For-All, Capture the Flag and War), across three different maps:

* Castle: The Imperial Japanese Army faces off against the Marine Raiders in a daytime battle, located on the grounds of an ancient, Japanese castle.

* Makin: The U.S. Marine Raiders square off against the Imperial Japanese Army in a nighttime fight, set in an outpost on the Makin Atoll in the Pacific.

* Roundhouse: The Wehrmact will fight the Red Army to the bitter end in a daytime struggle that features tank and infantry combat, set in a desolate, war-torn European train depot.

Call of Duty: World At War is slated for a November 11 release on Xbox 360, PlayStation 3, and PC. Activision says the beta will last for a few weeks, up until the game’s debut.

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