https://www.pcgamer.com/battle-royale-game-the-culling-origins-is-closing-in-may/

The Culling: Origins, the free-to-play do-over of The Culling that went live in September 2018, will be closed in May. Developer Xaviant said in a farewell message  that it had hoped in-app purchased would generate enough revenue to support the battle royale game, but it hasn't worked out. 

Xaviant decided to make The Culling free to play after the release of The Culling 2 in July 2018 went disastrously wrong. Players were unhappy with the state of the game, which deviated dramatically from the original, and were also angry that Xaviant halted development of The Culling just a couple of months after it went into full release so it could work on the sequel. The backlash was so intense that the studio elected to pull the plug on The Culling 2 just a few weeks after releasing it and turn its attention back to the first game instead.