Demo
A playable version of the original concept was released online for PC and in the May 2006 issue of Official Xbox Magazine for the Xbox 360.
A single-player demo of the revamped game for Windows was released on October 11, 2007. The demo contains one level and four weapons from the full game. An Xbox 360 demo was also released on Xbox Live. A demo for the PlayStation 3 was released on November 1, 2007.
On November 9, 2007, IGN announced a multiplayer demo scheduled to be released on November 14, 2007 on Xbox Live Marketplace. It has been released. The multiplayer demo for PlayStation 3 was released on December 6, 2007. Both of these demos and the single player were combined at that time. Thus the demo runs in both single and multiplayer.
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