Subnautica 2 Dives Deep: 4 Million Sales in Five Days Despite Studio Drama
The sequel to one of early access's great success stories sold a million copies in its first hour and earned over $130 million on Steam by summer, all while its makers fought their own publisher in court.
Few games capture the fear of the deep like Subnautica. You crash on an alien ocean planet with nothing but a survival kit, and every trip below the surface is a gamble between curiosity and the dark things that live further down. It sold its way into PC legend through years of early access, so expectations for the sequel were enormous. It met them.
Subnautica 2 entered early access on May 14, 2026, on PC (Steam, Epic Games Store and Microsoft Store) and Xbox Series X|S through Game Preview, and on Game Pass from day one. It sold 1 million copies in its first hour, 2 million within 12 hours and passed 4 million in five days, according to developer Unknown Worlds. On Steam it peaked at 467,582 concurrent players, and the studio said the all-platform peak passed 651,000.
What's new under the waves
The sequel moves to a new alien world, built in Unreal Engine 5, and adds the feature fans had wanted for a decade: optional four-player co-op. You can still dive alone, which many players will tell you is the scariest way to play, but you can now build bases and explore with friends.
The early access version sells for $29.99 on Steam, and Unknown Worlds expects it to stay in early access for two to three years, with the price rising at 1.0. Reviews on Steam settled at Very Positive, with more than 32,000 within days of launch.
By the numbers
- May 14, 2026: early access launch.
- 1 hour: 1 million copies.
- 5 days: 4 million+ copies.
- 467,582: all-time Steam peak.
- 651,000+: all-platform peak on launch day.
- $133.6 million: estimated Steam revenue by the end of June, about $120 million of it in May, per Alinea Analytics.
- 5.6 million: Steam wishlists before launch, about 12% of which converted into sales.
The drama behind the launch
The launch landed in the middle of one of the strangest disputes in recent PC gaming. In 2025, publisher and owner Krafton removed the studio's leaders Charlie Cleveland, Ted Gill and Max McGuire, citing an "absence of core leadership." The former executives argued Krafton was delaying the game to avoid paying a reported $250 million earnout, a bonus tied to sales targets and release timing.
A Delaware court later reinstated Gill as CEO and restored his authority over the studio and the launch process. Parts of the game also leaked days before release, but demand barely flinched. When the game finally arrived, the drama turned out to have done little more than make more people curious.
Why it matters
Subnautica 2 shows that early access, once seen as a risk, is now a launch strategy for some of PC gaming's biggest names. Alongside Slay the Spire 2 and WARDOGS, it's one of three early access games this year to earn more than $100 million on Steam before reaching 1.0.
What's next
Unknown Worlds says new content and updates will continue throughout early access. The more interesting question is what co-op does to the game's sense of dread. If the ocean feels just as frightening with three friends beside you, Subnautica 2 could end up even bigger than its predecessor. See how it ranks with 2026's other breakouts in our Steam hits round-up.