Below Zero is an underwater adventure game set on an alien ocean world. It is a new chapter in the Subnautica universe, and is currently in development by Unknown Worlds.

Return to planet 4546B

Dive into a freezing underwater adventure. Below Zero is set in an arctic region of planet 4546B. As a scientist posted to a research station on the planet's surface, you are tasked with studying alien artifacts...

Craft, Survive, Research

The Vesper space station orbits high above you, sending supplies, and receiving samples you send up. When disaster strikes the research station, you must improvise to survive: Scavenge for resources, build shelter, and craft equipment.

Explore New Biomes

Swim beneath the blue-lit, arching growth of Twisty Bridges. Navigate treacherous ice floes on the ocean surface. Clamber up snow covered peaks, and venture into icy caves. Below Zero presents entirely new environments for you to explore.

Encounter New Creatures

Discover new lifeforms in the icy depths of 4546B. Swim through giant Titan Holefish, escape from aggressive Brute Sharks, and visit adorable Pengwings. Some residents of the frozen ocean will help you, and some might try to harm you.

An Ocean of Intrigue

Who were the aliens who came here before? Why were they on this planet? Can you trust your commanders? Below Zero extends the story of the Subnautica universe, diving deep into the mystery introduced in the original game.

About the development team

Below Zero is created by Unknown Worlds, a small studio that traces its roots back to the 2002 Half-Life mod Natural Selection. The team is scattered around the globe, from the United States to the United Kingdom, France, Australia, and more.

Warning

This game contains flashing lights that may make it unsuitable for people with photosensitive epilepsy or other photosensitive conditions. Player discretion is advised.