In February 2016, it was announced by Daybreak that the game had been split into two separate projects with their own dedicated development teams, with the game being rebranded as King of the Kill while the other became Just Survive.

Despite the unstable launch, John Smedley, CEO of Daybreak Game Company, announced that the game had sold over a million copies by March 2015. A new bug, which made all servers go offline, was also introduced to the game after the developer released a patch to fix other problems. At release, the game suffered from numerous technical issues, such as players reporting that they could not login to their account or enter any active server. Z1 Battle Royale was originally released on Steam's early access program on January 15, 2015, as H1Z1.

In April 2019, development of the game was given back over to Daybreak. A month later however, development of the game was transferred to NantG Mobile, who attempted to revert the game back to an earlier build from 2017, rebranding it as Z1 Battle Royale. 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.Īfter three years of being in early access for Windows, H1Z1 officially released as a free-to-play game in February 2018, later released for the PlayStation 4 in August 2018. 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. Z1 Battle Royale (formerly H1Z1 and King of the Kill) is a battle royale game developed and published by Daybreak Game Company.

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