H1Z1 is a free-to-play battle royale game developed and published by Daybreak Game Company. The game's development began after the original H1Z1 was spun off into two separate projects in early 2016: H1Z1: Just Survive and H1Z1: King of the Kill. The games were further split as separate projects in October 2017, with Just Survive dropping the H1Z1 name, and King of the Kill becoming simply H1Z1.
After three years of being in early access for Microsoft Windows, it officially released as a free-to-play game in February 2018. H1Z1 is also planned to be released for the PlayStation 4 in May 2018, and for the Xbox One at a later date.