In this game, you'll take on the role of an intrepid explorer who crashlands on an alien planet that's entirely covered in water; you'll have to survive against wildlife whilst you find out why you crashed.
First, you'll need to survive...
To survive, you'll need to scavenge materials and build yourself a base of operations.
Steam Deck
Take your underwater journey with you, as Subnautica is playable on the Steam Deck!. There are predators around every corner, and you don't want to get caught in the jaws of dangerous, deadly creatures lurking in the depths all around you. Monitor your oxygen levels, and never go deep without at least a light.
But beware!
It's definitely not safe on this new planet, and even less so at nighttime! Luckily, you can use your wits and resourcefulness to stay one step ahead of them by using the resources available to craft yourself useful items, including cool equipment like grappling hooks, torpedo launchers, and more!
Then, you can explore.