Subnautica 2 launched into a frenzy, drawing nearly half a million simultaneous players on Steam within its opening hour. The underwater exploration game hit 467,000 concurrent users on Valve's platform while also moving 1 million copies in that same window, a remarkable start for an early access release arriving midweek across PC and Xbox Series X and S.
The numbers signal genuine hunger for the sequel to the original indie phenomenon. Subnautica 2 was Steam's most wishlisted game heading into launch, and that anticipation appears to have translated directly into day-one sales and player engagement.
The critical verdict leans positive despite the game's early access status. Reviewers have praised the experience while acknowledging that development remains ongoing. The consensus suggests the foundation is solid, with the core loop of survival, exploration, and mystery already compelling even as systems continue to evolve.
Getting to this launch point required navigating considerable turbulence. Development began around 2022 with a target of 2025, but the project collided with a high-profile dispute between developer Unknown Worlds and publisher Krafton. In July 2025, Krafton removed CEO Ted Gill and other company leadership, citing business reasons. The ousted executives fought back through the courts, alleging the publisher orchestrated the move to sidestep a substantial $250 million bonus tied to hitting development milestones and release deadlines. A judge sided with the fired employees and ordered their reinstatement earlier this year, unblocking the path to release.
A leaked build emerged days before launch but failed to derail momentum. The game proceeded to release as planned, arriving with a narrative campaign, cooperative multiplayer, and vast ocean environments to uncover. Unknown Worlds plans to expand the experience with ongoing content updates throughout early access.
Author Emily Chen: "Half a million players in an hour after that legal nightmare shows the IP has genuine staying power, but Unknown Worlds will need to keep delivering new content to hold onto this crowd through early access."
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