'Subnautica 2,' developed by KRAFTON subsidiary Unknown Worlds, has surpassed 4 million cumulative global sales just five days after its early access launch. Following an initial 1 million copies sold immediately after release, it hit 2 million in 12 hours and reached the 4 million mark within five days.

On Steam, the game recorded a peak of 467k concurrent players and an average of 1.3 million daily active users. Cumulative playtime has reached 28.57 million hours, and it maintains a 'Very Positive' rating with 91% positive reviews out of approximately 73k submissions on Steam.

Unknown Worlds plans to roll out sequential patches based on player feedback. Key updates will focus on refining the deep-sea exploration experience, including adjustments to creature aggression and detection ranges, as well as enhancing the utility of survival tools.

'Subnautica 2' is the official sequel to the marine survival series 'Subnautica,' developed by Unknown Worlds, which was founded by Charlie Cleveland and Max McGuire. Set on an alien planet different from its predecessor, the game features an unknown ecosystem brought to life with Unreal Engine 5 graphics. It is also the first in the series to introduce a co-op mode for up to four players. It is currently available on Steam, Epic Games Store, and Xbox Series X|S.

Meanwhile, the Subnautica 2 team recently issued an apology regarding an inappropriate response from one of its developers, emphasizing that 'early access should be a dialogue with players, not a one-sided explanation from the development team.'.