Update: While I had no problems downloading the game, I'm hearing that it's a bitch and a half trying to pull it down from the Steam servers at the moment. If you get error messages, don't worry about it. Just try to download it again a bit later.

Original Post: Man, shit has not been going well for zombies lately, has it?

First Dead Rising 2 hits shelves (look for a review in this week's Merc) and millions flock to enjoy the undead genocide, and now Left 4 Dead 2 has finally appeared on the OS X iteration of Steam, Valve's online gaming service.

If you use Steam on your Mac, I'm going to assume you already know what this means, and if you don't, well, ask somebody else. I'm too busy offin' the shambling cajun hordes.