Bohemia Interactive's Dean Hall tweets another sales milestone for DayZ following word last week that the standalone zombie survival/horror game had sold 875K copies in three weeks of early access. Word is the game passed the one million unit milestone within a month: "Well, 1 million copies in 4 weeks. So much for the death of PC Gaming." Thanks Blend Games. Hall also made an interesting comment recently on Twitter: "The best part about DayZ's success, for me, is that I can now make all the games I've always wanted but that everyone said was too niche."