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Below Zero is an underwater adventure game set on an alien ocean world. It is the next chapter in the Subnautica universe and is developed by Unknown Worlds.
Submerge yourself in an all-new, sub-zero expedition in an arctic region of Planet 4546B. Arriving with little more than your wits and some survival equipment, you set out to investigate what happened to your sister...
Alterra left in a hurry after a mysterious incident. Abandoned research stations dot the region. What happened to the scientists who lived and worked here? Logs, items, and databanks scattered among the debris paint a new picture of the incident. With limited resources, you must improvise to survive on your own.
Swim beneath the blue-lit, arching expanses of Twisty Bridges. Become mesmerized by the glittering, mammoth crystals of the Crystal Caverns. Clamber up snow covered peaks and venture into the icy caves of Glacial Basin. Maneuver between erupting Thermal Vents to discover ancient alien artifacts. Below Zero presents entirely new environments for you to survive, study, and explore.
Survive the harsh climate by constructing extensive habitats, scavenging for resources, and crafting equipment. Blast across the snowy tundra on a Snowfox hoverbike. Cruise through enchanting and perilous biomes in your modular Seatruck.
Something undiscovered lurks around every corner. Swim through the giant Titan Holefish, encounter the haunting Shadow Leviathan, and visit the adorable Pengwings. Keep your wits about you. Not all creatures in this strange world are friendly.
Jump in, the water’s warm. The below zero temperatures of this arctic region pose a new threat. New weather conditions blanket above-ground habitats. Craft a toasty cold suit, sip on piping hot coffee, and warm up next to Thermal Lilies to stave off the chill.
What really happened to your sister? Who were the aliens who came here before? Why were they on this planet? Can we find solace from grief in truth? Below Zero extends the story of the Subnautica universe, diving deep into the mystery introduced in the original game.
Below Zero is created by Unknown Worlds, a small studio that traces its roots back to the 2002 Half-Life mod Natural Selection. It is the same studio that created the original Subnautica. The team is scattered around the globe, from the United States to the United Kingdom, France, Russia, Austria, Australia, Canada, and many more places.
This game contains flashing lights that may make it unsuitable for people with photosensitive epilepsy or other photosensitive conditions. Player discretion is advised.
The ocean is beautiful, amazing, and fun! And this ocean game is too! It has a story that will snag your attention, beauty that will awe your eyes, and gameplay that makes for fun exploration and a bit of building wit...
As a fan of the Original Subnautica, I find this second installment's small changes refreshing. Similar enough to feel like the great original, yet now so similar that it feels like a DLC of the original.
Shorter than the original game. More narration, with 2 NPC. Different vehicules, monsters and recipes. Some exploration on land with a frost meter.
I really enjoyed the story elements of Below Zero. In that regard, it was more linear than Subnautica, and it felt almost like a game-sized expansion. The Snowfox I really never used, and the Seatruck is 50/50. But th...
Great game! buy it and play it, but play the first Subnautica though so you can understand the story a bit better, or don't but I recommend
Far far smaller scale to Subnautica. You can easily see and complete everything in several hours. But still intriguing to explore with a mildly interesting story as usual.
4 months ago
Subnautica Free Weekend & Series Sale<p class="bb_paragraph">Hello Subnauts, </p><p class="bb_paragraph"></p><p class="bb_paragraph">With Subnautica 2's Early Access launch on the horizon, we're hosting a Free Weekend for Subnautica, the game that
Subnautica: Below Zero - PC (Steam)
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Below Zero is an underwater adventure game set on an alien ocean world. It is the next chapter in the Subnautica universe and is developed by Unknown Worlds.Return to planet 4546BSubmerge yourself in an all-new, sub-zero expedition in an arctic region of Planet 4546B. Arriving with little more than your wits and some survival equipment, you set out to investigate what happened to your sister...Uncover...
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4 months ago
<p class="bb_paragraph">Hello Subnauts, </p><p class="bb_paragraph"></p><p class="bb_paragraph">With Subnautica 2's Early Access launch on the horizon, we're hosting a Free Weekend for Subnautica, the game that
10 months ago
<p class="bb_paragraph">We have released a hotfix today that addresses a security-related concern raised to us by Unity. You can read more about the specific issue here: <a class="bb_link" href="https://steamcommunity.com/linkfilter/?u=
11 months ago
<p class="bb_paragraph">We’ve just released a brand new patch full of bug fixes and improvements for Below Zero! </p><p class="bb_paragraph">This update will roll out worldwide and might take some time to appear across the globe. &l
👍 Recommended · Steam player · 25 Jun 2026
The ocean is beautiful, amazing, and fun! And this ocean game is too! It has a story that will snag your attention, beauty that will awe your eyes, and gameplay that makes for fun exploration and a bit of building without being too cumbersome. An excellent addition to the Subnautica family of greatness. Spaaaaace and Oceeeeeaaan! :D
6 found this helpful
👍 Recommended · Steam player · 4 Jul 2026
Shorter than the original game. More narration, with 2 NPC. Different vehicules, monsters and recipes. Some exploration on land with a frost meter.
2 found this helpful
👍 Recommended · Steam player · 8 Jul 2026
I really enjoyed the story elements of Below Zero. In that regard, it was more linear than Subnautica, and it felt almost like a game-sized expansion. The Snowfox I really never used, and the Seatruck is 50/50. But the game is just more subnautica with more areas to explore. If you enjoyed the first game, you'll enjoy this Subnautica 1.5!
1 found this helpful
👍 Recommended · Steam player · 24 Jul 2026
As a fan of the Original Subnautica, I find this second installment's small changes refreshing. Similar enough to feel like the great original, yet now so similar that it feels like a DLC of the original.
0 found this helpful
👍 Recommended · Steam player · 24 Jul 2026
Great game! buy it and play it, but play the first Subnautica though so you can understand the story a bit better, or don't but I recommend
0 found this helpful
👍 Recommended · Steam player · 24 Jul 2026
Far far smaller scale to Subnautica. You can easily see and complete everything in several hours. But still intriguing to explore with a mildly interesting story as usual.
0 found this helpful
