BODY: The sequel to one of gaming's most beloved survival titles has made an extraordinary splash. KRAFTON Japan announced on May 15, 2026 that Subnautica 2, the long-anticipated follow-up to Unknown Worlds Entertainment's underwater adventure phenomenon, sold over 2 million copies worldwide within just 12 hours of entering early access.
The launch numbers tell a story of pent-up demand. According to KRAFTON, peak concurrent player counts have already reached up to nine times those of the original Subnautica, which itself became a slow-burning hit after its 2018 full release and has since sold tens of millions of copies across platforms.
Subnautica 2 expands on its predecessor's formula with a new alien ocean world, redesigned creature ecosystems, and—for the first time in the series—optional cooperative multiplayer for up to four players. The early access build launched simultaneously on Steam, with console versions planned to follow after the early access roadmap concludes.
KRAFTON, the South Korean publisher best known for PUBG: Battlegrounds, acquired Unknown Worlds in 2021 and has positioned Subnautica 2 as a flagship title for its growing premium-game portfolio. The publisher emphasized that early access feedback will directly shape the game's development through its scheduled 1.0 release.
The insider take
In Japan, the Subnautica series has cultivated a devoted niche audience—particularly among streamers on YouTube and Twitch, where the original's thalassophobia-inducing depths translated remarkably well into reaction-driven content. KRAFTON Japan's localization push, including full Japanese voice acting promised for the 1.0 release, signals an unusually strong commitment to a market where survival-craft games typically face an uphill battle against domestic JRPGs and Nintendo first-party titles. The nine-fold concurrent player jump suggests the cooperative mode is doing the heavy lifting, which aligns with broader Japanese gaming trends favoring shared experiences post-pandemic.
Originally reported by 4Gamer.net − 最新記事 (Japanese).