Day Z is a mod for the game ARMA II: Combined Operations
It is supposed to be the most realistic zombie survival game on the market.
http://dayzmod.com/I have played a little over 10 minutes on a coworkers computer. Spent the entire time belly crawling about 700 feet from a shack because I was overly concerned with dying and losing all the gear my coworker had scavenged. I would be very interested in setting up a swarm group to play the game, from the videos I have
seen and the testimonial of the people who host the pc gamer podcast the game seems like what people dreamed about when Resident Evil first hit the market.
As an aside, been watching some people stress test GWII on twitch tv, so hard to wait.