Subnautica: Below Zero — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| Subnautica Free Weekend & Series Sale | 2026-04-01 | Hello Subnauts, With Subnautica 2's Early Access launch on the horizon, we're hosting a Free Weekend for Subnautica, the game that started it all. From April 2nd at 10:00 AM PT through April 6th at 9:59 AM PT, you can play Subnautica for free. If you haven't explored the vast oceans of Planet 4546B yet, or you want to invite a friend to try it out, now is the perfect time!What’s waiting for you in Subnautica Explore a vast and immersive alien oceanUnravel the mysteries hidden within an ancient alien worldDiscover unique creatures and diverse ecosystemsBuild underwater bases and craft tools to surviveInterested? Play Subnautica for free from A |
| Below Zero Security Hotfix | 2025-10-03 | 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 o |
| Below Zero 2025 Patch | 2025-08-12 | 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 Snow |
| Subnautica 2 Early Access Coming 2025 | 2024-10-18 | We’re thrilled today to unveil the first teaser trailer for Subnautica 2 and announce that we’ll be heading to Early Access in 2025! 🥳 https://www.youtube.com/watch?v=WS0vTRl_2PQ Store pages are now live and you can wishlist Subnautica 2 on Steam. Our goal has always been to bring Early Access to as many of our community as possible, and we’re excited to develop Subnautica 2 from the start alongside more of you than ever before! Keen eyed Subnauts might have also noticed that we’ve given our profiles across the web a bit of an update. See if you can uncover all of the new details. Some are a little easier to spot than others 👀 And if you wa |
| Teeny-Tiny Hotfix | 2022-10-04 | Hello Subnauts! 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 |
| What the Dock Update | 2022-09-13 | A new update is available for Subnautica: Below Zero. 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 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 |
| Thank You for the Steam Awards Nomination! | 2021-12-23 | We can't believe it! You, our amazing community who have supported us at every turn, have now nominated us for a Steam Award. We are humbled by the wonderful support shown to us over the years. The nomination for Outstanding Visual Style is really the cherry on top! There are four other fabulous games in the running for the Outstanding Visual Style award. It's tough competition, but we encourage you to vote. Not necessarily for us, but for whichever game you believe is worthy of your singular vote in this category. And of course, don't forget to support other games in other categories too! The Steam Awards is a very special event for smaller |
| Language Pack Patch | 2021-08-18 | Language pack support for Hungarian, Finnish, Slovak, and Polish. 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! |
| Below Zero 1.0 Released! | 2021-05-14 | The big day is finally here! Subnautica: Below Zero 1.0 is now available on Steam. 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! 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. W |
| Launch Livestream | 2021-05-13 | Join us live on Friday, May 14th at 5PM UTC to celebrate the launch of Subnautica: Below Zero on Steam. From interviews with the development team, the premiere of the Below Zero Gameplay Trailer, and some special giveaways, there'll be no shortage of things to enjoy before you dive into the game. Check out the Launch Countdown to see the livestream start time in your timezone. As always, we want to thank all of you, our incredible community, for following us through Early Access. With all of your patience, feedback, and support, Below Zero has become the game it is today, and we're so excited to finally be able to share the full experience wi |
| Subnautica: Below Zero Original Soundtrack Released | 2021-04-30 | The Subnautica: Below Zero Original Soundtrack is out now! Composed by Ben Prunty, the soundtrack features 54 remastered and expanded tracks, which includes four bonus tracks. It totals two hours and 25 minutes, and is available to purchase for $9.99 USD. Also, for the first time, the original Subnautica soundtrack is available to purchase from Steam. To make the soundtrack more readily available, we've moved the soundtrack from the game itself to additional content. If you already own a copy of Subnautica on Steam, you will automatically be credited with a free copy of the soundtrack to download. You can find and download this directly from |
| Watch the New Below Zero Trailer | 2021-04-13 | As we hurtle ever closer to the launch of Subnautica: Below Zero, we are excited today to debut the cinematic trailer for you all to enjoy! Created in partnership with RealTime UK, the trailer provides a tantalizing glimpse at life on 4546B prior to the mysterious events that bring you planetside. https://youtu.be/rdix1XxaZyU We want to extend a thank you, as always, to our incredible community for continuing to support us throughout Early Access. We cannot wait for you to return to the Subnautica universe and brave the cold on May 14th! Keep diving. - Unknown Worlds https://store.steampowered.com/app/848450/Subnautica_Below_Zero/ |
| We Are Disabling Steam Cloud Saves | 2021-04-08 | Hello, Subnauts! As you may be aware, we were excited to introduce Steam Cloud save capability with the final Early Access update for Below Zero, Seaworthy. We have heard all of your feedback about how Steam Cloud saves have been working for Below Zero and have made the difficult decision to disable the feature. With Steam Cloud saves enabled for the last several weeks, we can say definitively that it's not quite ready for prime time. For us, this boils down to two factors: speed and reliability. Steam Cloud saves are currently taking too long for some players, and we have also received a few concerning reports of saves disappearing. The latt |
| Seaworthy Update | 2021-02-25 | A new update is available for Subnautica: Below Zero Early Access. Visit the Seaworthy site to learn more! 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 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 disco |
| Subnautica: Below Zero Price Increasing | 2020-12-16 | Hello, Subnauts! Subnautica: Below Zero is getting closer than ever to being ready for launch. We are aiming to release 1.0 in the early part of 2021 - as some of you might have guessed from our Nintendo Switch announcement - but still have bug fixing, optimizing, and further fine-tuning to do before it’s ready for launch on all platforms. With the release on the horizon, we will be increasing the price of Below Zero to $29.99 (USD) across all PC storefronts (Steam, Epic, Discord, Humble) on January 5th, 2021. This price will be Below Zero's final increase and the cost at full release. The price increase will not affect any previously purchas |
| Teeny-Tiny Update | 2020-12-04 | Hello, Subnauts! A new update has just been released for Subnautica: Below Zero. Though this is not a major Early Access update (consider it a half-way mark between Relics of the Past and our next major update!), it does contain a ton of bug fixes, optimizations, and polish to the world. 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 performa |
| Relics of the Past Update | 2020-10-29 | A new update is available for Subnautica: Below Zero Early Access. Visit the Relics of the Past site to learn more! Experience Below Zero’s story in its most complete form, now fully voiced! Check out Robin’s revamped look with a new Dive Suit and model Unlock more alien mysteries in the Precursor Caches Discover new world details, including artwork from the community Venture to the edge of the world and encounter the vicious Void Chelicerate Optionally pause your game when the PDA is open https://youtu.be/YKoHTbvV188 Complete and Fully Voiced Story Play through Below Zero from start to (almost) finish, with the most complete version of the s |
| Stranger Pings Update | 2020-08-13 | A new update is available for Subnautica: Below Zero Early Access. Mystery awaits you in Stranger Pings. Investigate the abandoned Alterra bases, unlock new base decorations, experience new creature behaviors, and much more. Visit the Stranger Pings site to learn more! Dig deeper into the mysteries of 4546B with new character portraits and base detailing Decorate and personalize your base with new props and stairs for surface bases Enjoy a smoother ride – with significantly less pop-in – thanks to improved grass and terrain fading technology Discover further detail and polish work in Deep Lilypads and Iceberg Zone Experience new creature beha |
| Salad Days Update | 2020-06-25 | A new update is available for Subnautica: Below Zero Early Access. Salad Days are here on 4546B! Grab a thermos of coffee, fire up the Recyclotron, and get ready for more ice-cold adventure... and salad. Visit the Salad Days site to learn more! Visit Marguerit’s Greenhouse and uncover unique plants and all-new salad recipes React to the changing environment of Planet 4546B with player emotes Interact with the Recyclotron and dismantle crafted objects to retrieve materials Discover the bridge to Arctic Spires and a new accompanying cinematic Experience the latest additions and clues to Below Zero’s revamped story Scale the Below Zero UI with a |
| Subnautica: Below Zero State of the Project (May 2020) | 2020-05-22 | Hello, Subnautica friends. These are strange and challenging times we’re all living through. I hope you and yours are staying healthy. If you play Subnautica or Below Zero, I hope that our games bring you happiness and some kind of healthy distraction. We recently released EA9. Here’s a quick update on where we’re at: The new story is just starting to come online. You can start a new game, experience the new intro sequence, and check out the new voice actors brought in to play Robin and Sam. We are much further along in planning than we are in implementation, and you can expect a lot more story content in the coming months. For now, we hope y |