GDN writes: "Can you imagine what it would be like to be dropped into a post-zombie apocalyptic world? How would you react? Better yet, what would you do if you were one of the zombies? Valve's new first-person shooter allows you to answer all of these questions in one of the contenders for game of the year. Dropping you immediately into the fray, Left 4 Dead's unrelenting action hits you fast and never lets up, and, let me say, I never thought a zombie invasion could be so much fun."