Now that’s what you call an overnight success! Subnautica 2 just released in Early Access on PC and Xbox Series on Thursday, May 14, 2026 and has already reached a major milestone.

The game from Unknown Worlds has sold over a million copies. Keep in mind that it’s also included in Xbox Game Pass. The number of players is likely much higher.

Furthermore, as of this writing, Subnautica 2 has reached a peak of 465,204 concurrent players on Steam. A figure that will inevitably climb in the coming minutes and hours.