In less than two hours, Valve will unleash the zombie apocalypse. After numerous delays and setbacks, Left 4 Dead will finally be available for PC and Xbox 360, bringing the joy (and horror) of cooperative zombie-killing to an eager public.

Come 12:00 AM EST, Valve will flip the switch and open the floodgates, allowing everyone who's purchased and pre-loaded via Steam to start playing on PC.

Not only will your loyal Shacknews staff be out there, fighting the horde along with everyone else, we'll be posting our in-depth review at the stroke of midnight, detailing our extensive experiences with the game, along with some nuggets of wisdom.