Subnautica Below Zero. Dive deeper into the lore and mysteries that Planet B holds with a fully voiced and complete story, and much more, in one of our final major updates. Show 1 more.

Get instant access and start playing; get involved with this game as it develops.


Deep Dive Update Trailer
In spite of that uncertainty, we still try to plan as far out into the future as possible, and we have tried to include every individual feature — big or small, meaningful or trivial — on the roadmap. In spite of our best laid plans, the roadmap has turned into something of a tyrant. On top of all that, some people on our team ended up crunching every six weeks or so! Something needed to change.
Navigation menu
Below Zero is an underwater adventure game set on an alien ocean world. It is a new chapter in the Subnautica universe and developed by Unknown Worlds. Dive into a freezing underwater adventure. Below Zero is set in an arctic region of planet B. As a scientist posted to a research station on the planet's surface, you are tasked with studying alien artifacts The Vesper space station orbits high above you, sending supplies, instructions, and receiving samples you launch from the surface. When disaster strikes the research station, you must improvise to survive: Construct habitats, scavenge for resources, hunt for food, and craft equipment.
Sign in to add this item to your wishlist, follow it, or mark it as not interested. Sign in to see reasons why you may or may not like this based on your games, friends, and curators you follow. Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more. Includes 2 items: Subnautica , Subnautica: Below Zero. You can use this widget-maker to generate a bit of HTML that can be embedded in your website to easily allow customers to purchase this game on Steam. Sign In.