- The Overload Update - 9 September 2026
Hello Hunters!It's been a few weeks since our last update went live, so it's about time for another one!Introducing, the Overload Update. There's a new late-game mission and it brings its own unique map with it. To ensure this sits cleanly against the existing questline, we've made a small change to an existing mission. And we have also included a large performance pass, giving you a real performance improvement.So, grab your kit. The Power Plant is been waiting...New Mission, Unique MapThe Nuclear Power Plant is here. Although, instead of running around the basement, now you can accept the mission, jump on the train and ride in to explore even more of this looming monstrosity. The Nuclear Power Plant is a unique map built solely for this mission, as opposed to being one you can travel to time and time again.This is extreme late-game work. Come prepared. Bring more ammo and repair kits…
- Become the ULTIMATE Hunter! - 4 September 2026
Hello Hunters!ZERO Sievert is a game of many systems. So many that some of the most useful ones sit quietly in a menu, a right-click or a bench tab and never get found. Today, we are putting 15 of those on the table. It is difficult to communicate everything you can do, and there is still room to spell out the small things that make looting, shooting and getting home that little bit easier. This list runs from sorting your stash and making cash, through surviving the Zone, to walking out with as much loot as you can carry.1. Stash tab iconsRight-click the stash tab number and you can swap it for an icon. Instant organisation. You know what lives where without reading a number, and it saves time on every return to the bunker.2. Hunter skillsPress J to open your PDA and check for Hunter skill points. Successful extractions earn EXP. Level up and pick perks. Some are utility, like Mule let…
- ZERO Sievert 40% Off Sale Ending Soon! - 23 August 2026
Quick Hunters!ZERO Sievert is discounted 40% in our Steam Daily Deal, but hurry! It won't last for long...The discount ends on August 27th. So if you've not picked it up yet, now's the perfect time.And tell your friends! They may be a Hunter ready for the Zone and not even know it...We'll see you out there.
- Performance Hotfix - 20 August 2026
Hello Hunters,We’ve just pushed a small hotfix focused on performance and a couple of quality-of-life improvements, especially for laptop players and gamepad users.PerformanceLaptops should now correctly detect and use the discrete graphics card automatically. This resolves the common issue of the game running poorly on systems with integrated graphics unless you forced the high-performance GPU through Windows settings. No more external fiddling required.Additional performance improvement: surface buffers for shaders are no longer constantly recreated when using non-integer resolution scaling.Fixes & QoLFixed a bug that caused overlapping icons.Sprinting now always works as toggle by default when using a gamepad.The sprint icon now only appears when sprint toggle is enabled.Known IssuesThe “Toggle Sprint” setting no longer affects gamepads. Toggle is now the default (and generally prefe…
- The Locked and Loaded Update - 13 August 2026
Hunters!A new update has arrived in the Zone, bringing a mix of new content, gameplay improvements and quality-of-life changes. And to make the update even sweeter, we’ve slapped on our biggest discount ever! For the next two weeks, you and your friends can pick up ZERO Sievert with a 40% discount.With this update, we've added some new toys to play with, made a few systems easier to use and spent plenty of time polishing things behind the scenes.As always, there's a little bit of something for everyone, so grab your gear and see what's changed.New LanguagesTo make the game more accessible, we’ve added five new languages, so now even more Hunters can play in their native tongue. The new languages include:FrenchItalianPolishRussianTurkishWe’ve also improved our localisation system in general to prevent incorrect text from showing among other changes (but more on that in the bug fixes sect…
- August Update Preview - 31 July 2026
Hello Hunters!We know it’s been a bit quiet recently for ZERO Sievert content, but today that changes. It’s time to start looking at what’s coming in the next update.August is shaping up to be a pretty exciting time for ZERO Sievert. We’ve got a solid mix of feature work, quality-of-life improvements and bug fixes all making their way to a bunker near you.Overall, our goal is to make ZERO Sievert feel smoother to play and more intuitive. Some of these changes are based directly on your feedback, others are things we’ve spotted ourselves, and a few are just those little annoyances that have been sitting on our list for a while.Smarter Ammo ManagementThis one sounds small on paper, but it should make life a lot easier in the middle of a firefight.We’re adding automatic ammunition switching. Right now, if you run out of one type of ammo you can sometimes end up frantically wondering why yo…
- ZERO Sievert 2 Forest and NPCs Preview - 10 July 2026
Hello Hunters!We've just released a brand-new Developer Update, giving you a look behind the scenes of ZERO Sievert 2.In this video, we introduce our Senior Environment Artist, Tomo, who takes us on an in-depth tour of the brand-new Forest map, explains how we're building the world of ZERO Sievert 2 and how our procedurally generated maps come together to create unique experiences every time you head out into the Zone.We also sit down with Senior Artist Ruo Yu, who gives an exclusive look at the creation of our new Bandits and Ghouls, including modelling and animation. Ruo Yu also dives into the brand-new NPC customisation system we're developing.This video is packed with never-before-seen footage and a closer look at systems we've not yet showcased publicly, so if you've been following the development of ZERO Sievert 2, you won't want to miss it.🎥 Watch the latest Developer Update her…
- ZERO Sievert is 30% off in the Steam Summer Sale - 29 June 2026
If you've been waiting to try ZERO Sievert, your moment has arrived...As part of the Steam Summer Sale, ZERO Sievert is 30% off (that's our biggest discount ever!). There's never been a better time to explore Zakov, survive the wasteland, and see why so many other Hunters have fallen in love with the game.Better still, you'll be jumping in after the release of one of our biggest updates yet: The Phantom Update. Packed with new content, progression rewards, major quality of life improvements, UI enhancements and much more, there's never been a better version of ZERO Sievert to experience.Whether you're a seasoned survivor or completely new to ZERO Sievert, now's the perfect opportunity to experience the game before the next chapter begins with the highly anticipated ZERO Sievert 2, bringing co-op multiplayer to the Zone for the first time.Already own the game? Now's the time to get your…
- The Phantom Update - 4 June 2026
Hunters, The Phantom Update is now live! This update brings a mix of new threats, new content and quality of life improvements to the Bunker and Zone. From a new roaming danger in the Swamp, to expanded storage systems that make your stash more organised and easier to manage, there's plenty to discover both in and out of raids. Stay sharp! This update changes more than it seems... New Boss: PhantomSomething is moving in the Swamp… and it doesn't stay still for long... We've added a new roaming boss to put you even more on edge when trying to find and secure your loot. Not only that, but he's rocking a ghillie suit to make him just as much an unseen threat as he is a formidable enemy. Should you track him down and come out of the battle victorious, you'll find coordinates on your map leading to his secret stash, which has some epic gear inside. Just make sure he doesn't find you first...…
- The AMA is Now Live on r/ZEROsievert - 6 May 2026
Hello everyone,If you’ve got questions about ZERO Sievert, ZERO Sievert 2, multiplayer, development, or anything else for Luca from CABO Studios and Giuseppe from Underdog, come join us here:Join the AMA!
- AMA with CABO and UNDERDOG - 1 May 2026
Hello everyone,We wanted to let you know that we’ll be doing an AMA on r/ZEROsievert on Wednesday 6th May at 2pm BST.Taking part will be Luca from CABO Studios and Giuseppe from Underdog!If you’ve got questions about Zero Sievert, Zero Sievert 2, multiplayer, or the future of the series, this will be a great chance to ask them.We hope to see you there!
- Zero Sievert 2 is REAL!! - 30 April 2026
Hello everyone, Before anything else, we want to say this clearly. Zero Sievert 1 is still a big focus for us, and we’re continuing to support and improve it while we work on what’s next. (As part of that, we’ve just released a new beta that includes a Russian translation!) With that said, today we’re excited to officially share that Zero Sievert 2 is in development! Watch the reveal trailer here For us, this is a chance to take everything we love about Zero Sievert and push it further. We want to build on what made the first game special, keep that addictive extraction loop at the heart of it, and crank up the tension and atmosphere even more. Most importantly, Zero Sievert 2 is being built with multiplayer in mind from the ground up! We also know how much the original Zero Sievert means to this community, so we want to be clear that there’s still more coming for it. For Zero Sievert 1…
- Hotfix for the Hotfix - 23 April 2026
Oops! 😓 We made a mistake with the previous build, and we’re really sorry if you were affected by the crash. The team worked quickly to get a hotfix out, and this should now be fixed. Patch Notes Fixed a crash on death. Really sorry about that! We were so excited to share the Controller Improvements and ✨Borderless Fullscreen✨, but we should have left this one cooking in beta for a little longer.
- Gamepad quality of life patch and more bug fixes! - 22 April 2026
Hello Hunters!We just published another hotfix, this one includes some important quality of life updates:Bug fixesBorderless fullscreen is now available: Hopefully this means less issues with alt-tabbing and gpu drivers, it's enabled by default on fresh installations but you may want to turn it on if you have existing settings. If you are one of the users experiencing issues with alt tabbing the game go and turn Borderless mode ON, tell us here in the comments or on Discord if this solved your issues. Fixed several potential crashesImproved gamepad controls and UI navigationMap markers can be placed and removed with just one button on controllersMap navigation now uses analog stick instead of dpad on controllersImproved gamepad aim assistSteamdeck glyphs: steam deck users will now see console-correct images on button prompt, before the graphics were shared with the xbox padInventory: Be…
- Localization Hotfix - 21 April 2026
Fixes characters in Spanish, Spanish LATAM, Brazillian Portuguese, German
- Help Us Test the Next Update! - 17 April 2026
ZERO Sievert – Test the Next Update!Our next update is FULL of content, fixes and train skins (more on that later...) and we want you to jump in early to put it through its paces.This update brings a mix of new threats, new content, and meaningful quality-of-life improvements to the Zone. From a new roaming presence in the Swamp, to expanded storage systems that make your bunker cleaner, more organised, and easier to manage, there’s plenty to discover both in and out of raids.We’ve also made a number of improvements to controls, progression, and overall usability, giving you more control over how you play, fight, and survive. If you would like to give it a go, head on over to the official ZERO Sievert Discord sever, join the Beta Squad channel and jump on in! @Ethan is ready and waiting to get you testing with the best of them!And if you're not quite convinced yet, just read on below to…
- It Is Happening... - 19 March 2026
Hello Hunters!Our latest dev update video has just gone live! You can check it out below...While the reports of more emissions and ghoul sightings have been rolling in, we’ve been heads down, not just looking at weapons on paper, but getting hands-on. Testing ergonomics. Handling. The way different setups actually feel when you use them and not just how they look.All of this is feeding directly into improvements to weapon modding and how guns behave in your hands. We’ll walk you through what we’ve learned, what’s changing, and what it means for your loadouts going forward.We've also bee2&%& // EMERGENCY BROADCAST //#%2&%&"!2// PLEASE STAND BY //
- ZERO Sievert - March Hotfix - 2 March 2026
Hello Hunters!We've just put live a hotfix which has a speculative fix for the crashes some of you have been experiencing. This one has been particularly difficult to reproduce, so as a starting point for tackling it, we've updated the Steam SDK which was.... just a few versions out of date...Update, jump in and let us know how it looks and feels. and most importantly...If you had the crash and it's fixed, let us know. And if you had the crash and it isn't fixed, let us know!Let us know in the comments or join the official ZERO Sievert Discord server and give @Ethan a shout and give him an update on the update.Any and all information you can provide to us will help us get closer to resolving this problem. Thank you!We'll see you in the Zone...
- ZERO Sievert Christmas Update Is Live! - 18 December 2025
🎄 ZERO Sievert Christmas Update Is Live!The Christmas Event is back in ZERO Sievert! Jump into the Zone during the holidays to hunt for festive loot, upgraded airdrops, and new backpacks including drops from NPCs for the first time ever.🎒 NPCs now drop backpacks 🎁 9 brand-new backpacks added 🎄 Christmas airdrops guaranteed festive gearGood luck out there, and get Santa some milk!🎄 Christmas Event ReturnsThe holidays have arrived in the Zone once again.The Christmas Event is now enabled, bringing back festive loot and themed encounters.If you extract alive while carrying a Christmas Event item, it will be automatically added to your stash when starting a new game.Limit: 1 per unique item, except grenades (up to 5).Christmas Airdrops have been improved:Now have a 100% chance to spawn at least one piece of Christmas equipment.Will never spawn in the Horizon area on the Industrial map,…
- The Rotking Update: Hotfix - 14 November 2025
The Rotking Update: HotfixHello Hunters!Following the launch of The Rotking Update, we identified several stability issues that were causing unexpected crashes for some players. Thanks to your quick reports (and the log files you sent in), we were able to track these issues down and roll out a hotfix to address them.💬 A THANK YOU TO THE COMMUNITYA huge thank you to everyone who took the time to report issues and share logs — your feedback and support help us keep ZERO Sievert stable and improving with every update.If you continue to encounter any issues, please report them on the Steam Discussions or the official Discord so we can investigate further.See you in the Zone, – The ZERO Sievert Dev Team
