The popular 7 Days to Die reached a sales milestone earlier this week, marking more than 1 million copies sold on Steam, according to SteamSpy.com.

7 Days to Die is still in Early Access as an alpha, but still proves very popular, even in the crowded open-world survival genre on Steam. Additional open-world survivor games to crack 1 million copies are Don't Starve, H1Z1, and DayZ.

Congratulations to 7 Days to Die developers The Fun Pimps.