About the Game
Return to planet 4546B
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...
Uncover the truth
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.
Discover uncharted biomes
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.
Construct habitats and vehicles
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.
Research alien lifeforms
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.
Survive the chilly temperatures
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.
An ocean of intrigue
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.
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. 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.
Warning
This game contains flashing lights that may make it unsuitable for people with photosensitive epilepsy or other photosensitive conditions. Player discretion is advised.
Screenshots
9 images
Version Information
Steam Patch Notes
Official update history
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: https://unity.com/security/sept-2025-01/
While the update patches out the flaw, Unity has said that, to their knowledge, no one has exploited the issue to date, and no players have been at risk.
To help ensure that this security flaw can never be exploited on Subnautica or Below Zero, we have updated Unity following the guidelines provided. We have also had to make the difficult decision to disable all legacy and alternative branches of Subnautica and Below Zero, as there is no way for us to patch out the security issue on each of those branches individually.
If you play Subnautica or Below Zero with any mods on our legacy or alternative branches, you should disable or remove them before launching the game after the update to preserve your save files. You will need to check that the mods you want to play are updated to work with the most recent version of the game.
For our speedrunning community, this also means that the speedrunners branch has been disabled. We understand that this will affect speedruns moving forward, but the security and safety of all our players is our highest priority.
Thank you for all your continued support for Subnautica and Below Zero!
Keep Diving.
We’ve just released a brand new patch full of bug fixes and improvements for Below Zero!
This update will roll out worldwide and might take some time to appear across the globe.
PC & Console
Added a pop-up newsfeed that can be used for one-time-only announcements.
Fixed a rare bug that would stop the game world from streaming in and make the game unresponsive when attempting to save in some cases.
Fixed the Ice Worm always damaging the Vehicle/Snowfox/Player from any distance.
Changed the chance of knocking the player off of the Snowfox when taking damage from the Ice Worm from 100% to 25% to make the encounter less frustrating..
Changed the Snowfox's collider to make it less annoying to drive by, greatly reducing the amount it can get stuck on obstacles and props.
Changed the orientation of the Snowfox when deployed to now properly face the same direction as the player to make it easier to mount in a hurry.
Changed the Snowfox's damage from terrain impact from 100% to 12%, to not need as many repairs from just driving.
Fixed when the Ice Worm pushed the Snowfox it would only trigger a cooldown to the physical push but not damage and knock off.
Fixed the Snowfox occasionally falling inside the terrain and disappearing forever when deploying it.
Fixed the "lightning flashes" accessibility option preventing the Repair Tool from using power when it was unchecked.
Changed the main menu on all platforms by removing the merchandise store banner.
Fixed the texture filter quality to use Bilinear for some sprites on the Blueprints PDA tab.
PC only (excluding Windows Store)
Fixed gamepad selection indicator being visible after switching from gamepad to keyboard and mouse.
We’ve released the Teeny-Tiny Hotfix - a patch to resolve a few bugs from our last update What the Dock. Fixes:
- Ambient water particles are now showing correctly
- Fix to allow new screenshots can be cycled through after deleting older screenshots again
Thank you to everyone who reported bugs to us. As always, keep in touch and let us know if you have any persisting issues!
- Unknown Worlds
- Tailor your Below Zero experience with Custom Game Mode
- Utilize an all-new Seatruck Dock base piece
- Enjoy the most stable version of the game with tons of bugs squashed
- Get yourself out of some sticky out-of-bounds situations with an Unstuck Button
- Steam Cloud saves are back (yes, for real this time!)
Custom Game Mode
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Tailor your Below Zero experience to the finest of details with a new Custom Game Mode option. Toggle everything from Player Damage, to Day and Night Length, to Creature Hostility, to implementing a Vegetarian Diet, and much, much more. The challenges are endless and yours to create!
Seatruck Dock
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Looking for a way to dock your Seatruck and its modules? We’ve got you covered! This brand new base piece will accommodate the Seatruck and up to five modules comfortably. No more chasing your modules around in open water. You can just easily get back to your adventures right from your base.
Tons of Bugs Smashed
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The team has been hard at work optimizing the Below Zero experience even more, with tons more bugs smashed. Enjoy the most stable version of the game to-date with this latest update.
Unstuck Button
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Ever found yourself stuck out-of-bounds with no way to rectify the situation? This handy unstuck button will come in clutch to ensure you don’t lose any precious game progress. Simply open the Options menu and select Unstuck to teleport back to your last safe location.
Steam Cloud Saves
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Got a sense of deja vu? Steam Cloud saves are back! (Yes, for real this time.) Use Steam Cloud to upload your saved games and download them to any computer with the same Steam account when you launch the game. Taking your lived in saves from computer-to-computer has never been easier.
Stay Connected
Follow the Unknown Worlds and Subnautica: Below Zero Steam groups to get a notification on Steam whenever we have news about the game. You can also:
- Follow for updates and news @Subnautica on Twitter
- Get live source code changes by following @SubnauticaSCM on Twitter
- See update news on Facebook
- Watch update summary videos on YouTube
- Satisfy your underwater Instagram craving by following @Subnautica
- Chat with fellow divers in the Subnautica Discord server
Enjoy, and happy diving!
- Unknown Worlds
https://store.steampowered.com/app/848450/Subnautica_Below_Zero/
This update also includes a fix for endgame dialogue in Sam's storyline, and some minor bug fixes related to translation and text sizing.
Finally, if you use console commands on PC, they're now even easier to access by using shift+enter!
This update also includes a fix for endgame dialogue in Sam's storyline, and some minor bug fixes related to translation and text sizing.
Finally, if you use console commands on PC, they're now even easier to access by using shift+enter!
This update includes even more bug fixes and polish, improving on our final Early Access release, Seaworthy, and also unlocks the endgame for all players. If you have a save file from Early Access, you can continue to play it and progress as normal!
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Once again, we want to thank you all for your continued support throughout Early Access. Without your feedback, passion, and love for Subnautica, the game would not be what it is today. Please continue to give us feedback too, as you dive into the mysteries of Planet 4546B: support will be on-going for both games.
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We hope to see you at 5PM UTC, Friday May 14th, for the Launch Livestream, to celebrate the release of Below Zero with you all. Make sure that you don’t miss it!
Keep diving,
- Unknown Worlds
https://store.steampowered.com/app/848450/Subnautica_Below_Zero/
- Uncover the mysteries of the all-new, fully voiced Crashed Ship story
- Enjoy the finalized soundtrack as you travel biome-to-biome
- Utilize the improved Prawn Suit controls throughout your adventuring
- Experience our most stable version of the game to-date with even more bug fixes
- Check out the added gamepad and rumble support
https://youtu.be/yX5Lkk0iPU0
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Crashed Ship Story
Have you ever found yourself wondering about the crew of the Mercury II whilst you trawl the wreckage scattered across the ocean floor? Wonder no more! You can now discover fully-voiced logs in the Mercury II wrecks that will provide more insight into the crew aboard... and their fate.
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Completely Integrated Soundtrack
Below Zero's soundtrack, composed by Ben Prunty, is now fully integrated in-game. Every biome now features a rich and atmospheric track to deepen your immersion in the world of 4546B!
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Prawn Suit Improvements
The Prawn Suit has more maneuverability than ever before with the addition of a horizontal boost, as well as improvements and refinement to existing Prawn Suit upgrade modules, such as the Torpedo Arm.
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Bug Squashing
Thanks to all of your incredible feedback and bug reporting, the team has been hard at work squashing bugs for this latest release. With the Seaworthy update, you'll be able to play the most stable version of the game yet!
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New Loading Bar
What's that waddling across the bottom of your screen? While you wait for Below Zero to load, a cute little Pengling will walk along the loading bar. It may stumble a few times, but don't worry, no Penglings were harmed during the loading process!
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Steam Cloud
With this final Early Access update, we're bringing Steam Cloud support to Below Zero. You can utilize Steam Cloud to upload your saved games and download it to any computer with the same Steam account upon launching the game. So, if you need to move from computer-to-computer, taking your lived in saves with you has never been easier.
Note: If you have local save games on multiple computers, we recommend disabling Steam Cloud and manually merging your files before syncing.
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Gamepad and Rumble Support
Below Zero now has added gamepad support. If you prefer to traverse the waters of 4546B using the gamepad of your choice, it should now provide a seamless experience. Rumble support is also available for Xbox controllers only.
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1.0 Release Date
Oh, and we have just one more little announcement: Subnautica: Below Zero is coming to all platforms on May 14th! We want to extend our thanks to all Subnauts for your patience as we finalized the release date. We can't wait to bring the game to everyone playing on PC and console. And once again, we appreciate all of your support and feedback throughout the Early Access process.
Follow Below Zero development
You can find out about upcoming updates in all sorts of ways. Sign up to the Development Newsletter to receive word every time an update is released. Follow the Unknown Worlds and Subnautica: Below Zero Steam groups to get a notification on Steam. You can also:
- See update sneak peaks by following @Subnautica on Twitter
- Get live source code changes by following @SubnauticaSCM on Twitter
- See update news on Facebook
- Watch update summary videos on YouTube
- Satisfy underwater Instagram craving by following @Subnautica
- See our task lists & milestones on Favro
- Chat with fellow divers in the Subnautica Discord server
Enjoy, and happy diving!
- Unknown Worlds
https://store.steampowered.com/app/848450/Subnautica_Below_Zero/
Hopefully, this update will serve as a hold-over through the holiday season and make your Early Access experience that little bit more polished!
Here are all the changes included in this update:
Changelog
- Complete encyclopedia, tooltips, names, descriptions and PDA text.
- Streaming and memory optimizations (Unity Addressables, octree pruning, etc)
- Art performance optimizations (material and mesh complexity reductions, LODs, culling, VFX optimizations)
- Story presentation improvements and databank organization
- Final soundtrack with updated music manager
- Improved Creative Mode
- Added weather quality option
- Updated early game immersive training
- Updated Robin / player model
- Tons of bug-fixes and general polish (collision, materials, loot, spawns, model fixes, anim blending fixes, z-fighting fixes, base ghosts and construction issues, missing effects, etc)
Follow Below Zero development
You can find out about upcoming updates in all sorts of ways. Sign up to the Development Newsletter to receive word every time an update is released. Follow the Unknown Worlds and Subnautica: Below Zero Steam groups to get a notification on Steam. You can also:
- See update sneak peaks by following @Subnautica on Twitter
- Get live source code changes by following @SubnauticaSCM on Twitter
- See update news on Facebook
- Watch update summary videos on YouTube
- Satisfy underwater Instagram craving by following @Subnautica
- See our task lists & milestones on Favro
- Chat with fellow divers in the Subnautica Discord server
Enjoy, and happy diving!
- Unknown Worlds
https://store.steampowered.com/app/848450/Subnautica_Below_Zero/
Current Release
Not available
System Requirements
How to Install
setup.exe
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
4.3 GB
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View AllDownload Subnautica: Below Zero for PC with a direct link or via torrent. Get the full version of Subnautica: Below Zero for free. Subnautica: Below Zero is a Adventure released by Unknown Worlds Entertainment.