Anybody’s been playing this? I was considering getting after reading the glowing reviews. Seems like fun. And it’s from the same people who did ‘Half-Life’. Coop zombies survival game, sounds like fun 
I have it, its quite good. If you get it for PC, we have a GWC steam group where we can find each other for co-op play.
It’s great and probably one of the more interesting games that came out last year. It never gets boring even though it’s the same levels over and over again. The game has great AI and randomizes zombie types and spawn points every single level.
This is still a great game. Valve also just released some new levels for the versus mode and best of all it’s free.