Just how popular is DayZ?

Just how popular is DayZ, the ArmA 2 modification that has set the game industry, and PC gaming, alight? whopping 420,000 people are playing the open world survival horror modification, its creator Dean Hall told Eurogamer after his star turn at Rezzed, the PC and indie game show in Brighton. The alpha version of the game launched just three months ago, in April 2012.