Left 4 Dead 2 (PC)

Left 4 Dead 2 is a cooperative first-person shooter game. It is the sequel to Valve Corporation's award-winning Left 4 Dead. The game launched on November 17, 2009, for Microsoft Windows and Xbox 360. It will build upon the cooperatively focused gameplay of the original and will be using Valve's proprietary Source engine, the same game engine used in Left 4 Dead. Like the original, Left 4 Dead 2 is set during the aftermath of an apocalyptic pandemic, and focuses on four survivors fighting against hordes of the infected.