The early access launch shattered franchise records with over 467,000 concurrent players and simple four-player co-op.
Subnautica 2 launched into early access on May 14, 2026, and within minutes it was clear the underwater survival sequel was a phenomenon.
Over 110,000 Steam users were in the game at the press of the button, and that number doubled in ten minutes.
The game didn’t just beat its predecessors; it shattered them. At its 90-minute mark, a peak of 467,582 concurrent players pushed Subnautica 2 to the fourth most-played spot on Steam, trailing only Counter-Strike 2, PUBG, and Dota 2.
How many players can play together in Subnautica 2
Subnautica 2 supports four-player cooperative multiplayer, so you and up to three friends can explore, build, and survive together. The game also includes full cross-play between PC and Xbox.
On top of that, Subnautica 2 runs smoothly on handheld devices like the SteamDeck, letting you join co-op sessions from anywhere.
The launch day player records
The early access launch was record-breaking. Within 10 minutes of going live, over 210,000 players were in the game on Steam. By 10:20 a.m. ET, that figure climbed to 341,788.
The all-time concurrent player peak hit 467,582 exactly 90 minutes after launch. That peak made Subnautica 2 the fourth most-popular game on Steam at that moment, behind only Counter-Strike 2, PUBG, and Dota 2. It also held the #1 spot on Steam’s Top Sellers.
How Subnautica 2 broke franchise records
Subnautica 2 smashed the franchise’s previous Steam player record by a factor of 9.1.
The original Subnautica peaked at 51,156 players in 2018, and Below Zero at 42,115 in 2021. The sequel’s launch brought in over nine times that combined peak in its first hours.
The launch also gave the older games a boost. Subnautica reached 48,604 concurrent players, its highest in eight years, while Below Zero hit 8,290 recently.
Sales, subscriptions, and handheld play
Subnautica 2 sold 1 million copies in its first 12 hours and 2 million by the following day. These numbers are even more impressive because the game launched as a day-one title on Xbox Game Pass.
Behind the scenes, the launch followed a messy corporate battle at parent company Krafton. The CEO reportedly consulted ChatGPT to avoid paying Unknown Worlds leadership a $250 million bonus, and a court later reinstated the studio’s original CEO. The gigantic concurrent playercount arrived despite that tension.
With a peak of over 467,000 players and straightforward four-player co-op, Subnautica 2 is a multiplayer survival powerhouse. For guides on base building, vehicles, and early-game tactics, check out the full Subnautica 2 hub at Solo Jugadores.
