The DayZ mod for Arma II: Combined Operations is now available on Steam! Join the scores of desperate survivors in the free award-winning and massively popular persistent multiplayer mod for Arma 2: Combined Operations! Go Solo, team up with friends or take on the world as you choose your path in this brutal and chilling landscape using whatever means you stumble upon to survive. However the infected are not your only threat. You will be forced to fight for your life against other survivors, over rare necessities like food and water, in your constant battle to survive in this wicked world.