The title, built on Unreal Engine 5 and set on a new alien ocean planet, logged 1 million sales at launch before surging past 2 million within the first 12 hours. Peak concurrent players on Steam reached about 467,000, while average daily active users stood at 1.3 million. Cumulative playtime has exceeded 28.57 million hours since launch.
The game currently holds a "Very Positive" rating on Steam, with more than 73,000 user reviews and an approval rate of 91 percent. Subnautica 2 is available on Steam, the Epic Games Store, and Xbox Series X|S.
"We’re incredibly grateful for the response from players around the world," said Fernando Melo, the game's executive producer.
"Community feedback continues to help shape the future of Subnautica 2, and we’re excited to keep building the experience together with our players."
Unknown Worlds Entertainment is the studio behind the original Subnautica, a title widely credited with defining the marine survival genre. The sequel introduces series-first cooperative multiplayer for up to four players, allowing teams to coordinate survival strategies and share discoveries across its vast alien seascape.
The developer has outlined upcoming patches to adjust creature aggression and detection range, and to enhance the utility of survival tools, as it works toward a full release in response to player feedback gathered during early access.
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