Quite some time ago I dreamt of me playing Subnautica but the whole game was different, you start off in a room with a bed, a table near the wall, a chair for that table, some other decor and a door facing east of the table, and once you go out the door you enter the main part of the game but your trapped in a giant, seethrough box with the crashed Aurora in the middle of it (but there was no radiation oddly) and when you look outside the box you see only water, and inside the box theres no islands, only the Aurora. And when you finally jump in the water, you see that it just keeps going deeper, and the deeper you get, the more biomes you get to. and the only land in that giant body of water is from the edges of the box and a giant pillar of sand, then stone in the middle (where the Aurora and multiple other in-game structures are) and I never really knew how materials were obtained but I assume the edges are where the outcrops are (and I also think that inside the outcrops are just random materials that vary depending on how deep you are). and the objective of the game is changed to destroying the box then escaping.