Subnautica 2 is seeing strong early momentum since entering Early Access, according to reporting from Eurogamer and Polygon. Polygon states that the game sells 1 million copies within its first hour on Xbox and PC after launch. Eurogamer reports even larger concurrent activity on Steam, saying Subnautica 2 reaches 467,000 concurrent players on Steam alone shortly after Early Access begins. Eurogamer also notes that the title has “swum” to around 2 million total sales, describing the game’s performance as exceptional following its Early Access launch. Taken together, the outlets describe both rapid first-hour sales and very high real-time player engagement across major platforms. While the sources highlight different metrics—first-hour units sold versus concurrent player counts and total sales—the overall picture is consistent: Subnautica 2 performs strongly immediately after release in Early Access, with high demand and substantial simultaneous usage.