The offer brings the PC version to $45 and the Xbox 360 edition to $55. Of course, the company's own PC digital distribution outlet Steam is among those participating.

The developer is also offering those who preorder an exclusive melee weapon, the American baseball bat, and early access to the demo. Valve utilized similar techniques for the first Left 4 Dead, with pre-orders getting early demo access and a discount.

The controversial zombie shooter sequel hits PC and Xbox 360 on November 17.