
Eventually we hit early access and now it would take many man-years to add any kind of multiplayer to Subnautica. But we had so much to learn about the game, multiplayer was never a priority. "Back in our early prototypes we always had multiplayer in the back of our mind. The game's director, Charlie Cleveland, wrote on the game's official forums: With all that time spent just making the game work, the developers had nothing left over for multiplayer. The core concept drew interest, but there was a lot of work to be done to smooth out the experience. This work took a little over three years, from late 2014 to early 2018. Like many titles launched that way, Subnautica was a bit of a buggy mess at the start. As mentioned before, the game was launched in Early Access first.

No, there is no official Subnautica multiplayer.
