Quarantine Zombies: Contamination — 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 |
|---|---|---|
| Quarantine Zombies: Localization in 14 Languages and Full Steam Deck Support | 2026-09-18 | Hey, checkpoint operators!A new update for Quarantine Zombies is here. Now even more players can take on checkpoint duty in their own language and bring their checkpoint along wherever they go!Localization in 14 LanguagesWe've translated the interface and all in-game text, including subtitles, into the following languages:Simplified ChineseRussianSpanish (Spain)Portuguese (Brazil)GermanFrenchPolishTurkishSpanish (Latin America)UkrainianItalianPortuguese (Portugal)DutchFinnishFull Steam Deck SupportQuarantine Zombies now fully supports Steam Deck. Screen survivors, spot the infected, and fight to survive in Chicago, all in handheld mode.Thanks |
| Update Now Live - Quarantine Zombies | 2026-09-08 | Hey, checkpoint operators!Here’s what’s included in today’s update:Improved performance in the open-world section toward the end of the game.Added full keyboard and mouse remapping with no restrictions on key or button assignments.Added adjustable flashlight brightness.Added an option to reset settings for each individual settings tab.Fixed minor bugs. |
| New Update - Quarantine Zombies: Contamination | 2026-08-21 | Greetings, Checkpoint Operator!We’re currently working on two major updates, but we still want to release smaller improvements whenever possible.Here’s what’s included in this update:Improved overall game performanceFixed the render distance of certain symptomsFixed symptoms displaying incorrectly on forearms and lower legsImproved the scanner’s visual effectsFixed an issue that prevented shooting QTEs from triggeringFixed inconsistent fence penetration for turret fireIncreased the damage of Tier 1 and Tier 2 turretsAdded automatic language detectionFixed various other minor bugsWe’re closely following your feedback and doing everything we ca |
| Hotfixes – Quarantine Zombies: Contamination | 2026-08-14 | Greetings, Checkpoint Operators!Today’s update includes the following fixes and improvements:Added notifications for lootable items.Integrated new animations for the new zombie types.Fixed several graphics settings, including texture quality options.Improved overall game performance by up to 10%.Fixed a main menu UI issue that caused the Continue button to remain highlighted longer than intended.Improved the visibility of cuts under UV light.Fixed visual issues affecting certain clothing items.Fixed numerous minor bugs.We would also like to thank every single one of you for your feedback. It helps us make the game better, smoother, and more e |
| Quarantine Zombies: Contamination is Out Now! | 2026-08-05 | Hello, Checkpoint Operators!Since our initial release we have been hard at work to deliver an improved version of the game. It has taken us a while and we are very proud to finally roll out our biggest yet update to Quarantine Zombies: Contamination.Contamination brings a meaningful set of improvements to the game. We have been listening to your feedback, and this update focuses on expanding the game mechanics, making the gameplay smoother and overall gives the game more of its own identity.Here’s what you will find inside:New melee combat system; More than five new symptoms;Three new tools to interact with the new symptoms;There is an all ne |
| Contamination Update Arrives in 7 Days! | 2026-07-28 | Greetings, Checkpoint Operators!Set your timers - in just 7 days we’ll be releasing our biggest yet update for Quarantine Zombies: Contamination. Over the past months we’ve been monitoring your feedback, working on fixing bugs and building new content to expand on the original game mechanics. We are excited to finally share the Contamination update release date with you and can’t wait to see you explore it all on launch day.Quarantine Zombies: Contamination introduces new survivor inspection mechanics, new symptoms, a number of new zombies and survivors and an expansion to the combat model, alongside with a balance pass on character movement |
| Get ready for Contamination - Next Content Update and Post-Launch Update | 2026-06-24 | Hello, Checkpoint Operators!Next month shall be exciting for the crew and those who follow us as we are finishing our work on our biggest update to Quarantine Zombie yet - Contamination.Thanks to your continuous feedback (and it’s been energizing to work our way through it!) from our initial launch early 2026, we have identified a core track to work on, and we are almost ready to deliver the changes to flesh out the core gameplay even more. The Infection EvolvesIn Contamination we are taking the Survivor Inspection Simulation to a whole new level. The infection evolves and with it, the Inspection Protocol and the Tools section is getting an e |
| Patch Notes: Subtitle Fixes, New Sounds, and UI Improvements. | 2026-05-14 | Patch NotesFixed subtitle bugs.The door mesh in the refugee area can now be shot through.Added clothing and equipment sounds while walking.Added new zombie death sounds.Added new refugees.Added a weapon reload interface.Fixed a bug where the protocol checklist could be scrolled with the gamepad’s left stick.Adjusted the volume of the intuition system.Fixed a bug where the gamepad UI overlapped with the keyboard UI during car rides.Fixed a bug where pressing Escape would sometimes not register. |
| Full Controller Support - Quarantine Zombies | 2026-05-01 | Hi everyone!We received tons of complaints about the lack of proper controller support. We did have partial controller support before, but the quality wasn’t good enough for the Stones Games team, and it definitely wasn’t good enough for you, our beloved players.So, we added full gamepad support and completely reworked the interface to make it controller-friendly.And that’s not all. In this update, all refugee voice lines previously generated by AI have been replaced with full voice acting by real actors. The refugees now feel much more alive, even if they are almost dead. Just kidding.As we mentioned before, AI-generated voice acting was onl |
| Quarantine Zombies 2 Is Now in Development + Big Updates for the Original Game | 2026-04-08 | We’re proud to announce that Quarantine Zombies 2: Day Zero is officially in development.With the sequel, we’re not just continuing the story. We’re taking everything that made the original concept work and pushing it much further.The new game is set in an open-world, infected Chicago. No more day-to-day transitions. No breaks. No downtime. Everything happens in real time, and the experience will be harsher, more intense, and more immersive than ever before.This time, your job is not simply to decide whether someone is infected or not. You’ll need to determine the stage of infection and, under the Captain’s orders, transport infected survivor |
| Bug Fixes - Quarantine Zombies | 2026-04-02 | We’ve fixed several annoying bugs in Quarantine Zombies.Patch notes:Fixed an issue where vehicle control bindings were not saved after re-entering the gameFixed a bug that activated the Protocol after killing a refugee in quarantineFixed a bug that teleported the player into a vehicle after the skyscraper destruction cutsceneFixed several minor bugs |
| Shader Compilation Added - Quarantine Zombies | 2026-03-30 | We’ve added shader compilation to improve overall game performance.This helps reduce stutters and freezes, making gameplay smoother and more stable.Changes:Added shader compilation for better performanceFixed several bugs |
| Zoom for Tools and Key Binding in the New Quarantine Zombies Update | 2026-03-25 | Friends, we’ve added the ability to bind keys in the settings menu, as well as a zoom feature that lets you zoom in by pressing the right mouse button.What’s new:Improved weapon aiming mechanicsAdded the ability to zoom in while using toolsAdded customizable key bindingsAdded tutorial windows for the car repair progression systemFixed several minor bugs |
| Intuition System Added and Bug Fixes - Quarantine Zombies | 2026-03-17 | We’re proud to introduce the new Intuition System. Spend intuition points to receive hints from the main character. Managing your intuition points is now an important part of the game!Update Notes:Added the Intuition SystemUpdated the visual effect for the Skin Rush symptomFixed a bug with Skin Rush symptom spawningRefugees’ heads no longer detach while running on minimum graphics settingsFixed minor bugs |
| Final Chapter Cutscene Improvements - Quarantine Zombies | 2026-02-23 | Friends, we’ve dramatically improved cutscene performance in Chicago. Thanks a lot for your feedback!Improved performance of the skyscraper destruction cutsceneImproved performance of the main final cutsceneFixed an issue where Quarantine Checklist markers could disappear after a day reset or after loading a saveFixed an issue where resetting settings to default sometimes wouldn’t applyFixed an issue where the Intuition system could fail to trigger after a raidFixed several minor bugs |
| Bug Fixes - Quarantine Zombies | 2026-02-13 | Hi everyone! We’ve shipped a new update with the following fixes:Fixed an issue where an inspection tool could clip and appear pressed against the player’s bodyFixed an issue where the refugee counter in the quarantine rooms could break if a refugee was killed thereFixed the gamma setting not working properlyFixed layout issues in the end-of-day report screenAdjusted the layout of the Settings menu UIImproved overall performanceFixed a few other bugsThanks for the reports — keep them coming! |
| Graphics Update - Quarantine Zombies | 2026-02-10 | Hello everyone, and thank you for the feedback. We’ve just shipped a new update that includes:Improved textures at the refugee inspection baseImproved zombie visualsRestored 4K and 2K resolution supportAdded music to key story cutscenesYou can no longer spend money on car parts if your car is already fully repairedFixed several additional bugsThanks again — keep the feedback coming! |
| Achievements are now live! | 2026-02-06 | We’ve added Steam Achievements and plan to ship a few more quirky ones soon.Alongside achievements, today’s update includes:Improved overall performanceSimplified recoil pattern while aiming down sightsAdded weapon misfire when you run out of ammoAdjusted difficulty of zombie raidsVarious bug fixesThanks for playing—keep the feedback coming! |
| Demo Update - Quarantine Zombies | 2026-01-29 | Hello everyone! We’ve received many requests to bring back the demo. The old demo was badly outdated, so we’ve updated it to the latest gameplay mechanics and content. See you in Chicago, friends! |
| Performance improvements and bug fixes - Quarantine Zombies | 2026-01-28 | Hello everyone! We’ve been closely following your feedback and just shipped a new update. Here’s what’s inside:Performance improvements in the final section of the gameDifficulty rebalance for zombie raids - encounters are tougherAdded additional graphics settingsImproved heart-rate monitor readout/indicationFixed an issue where zombies would not spawn in the swamp during a quest for some playersFixed instruction UI issuesVarious other bug fixesThanks for playing and keep the feedback coming! |
| Quarantine Zombies - Performance update! | 2026-01-23 | Hello everyone!We investigated reports that some graphics settings weren’t applying correctly. We’ve now shipped major fixes. As a result, applying lower graphics settings on weaker machines can deliver up to a 100% FPS increase.Thank you for all the feedback. We’re preparing substantial patches in the coming days. See you in Chicago! |
| Quarantine Zombies - Available NOW! | 2026-01-20 | Hello, everyone!Quarantine Zombies is OUT! Already available for your enjoyment here on Steam with 20% launch discount.Stones Games proudly announces the release of Quarantine Zombies. It’s our debut title, and we set out to deliver what our competitor couldn’t in this genre:A range of modern weapons with satisfying, contemporary gunplayA blend of first-person shooter and refugee inspection sim - don’t hesitate to wipe out as many zombies as you can; ammo is cheap, life is pricelessLeave the base and explore swamps, ruined bridges, and Chicago itselfDrive through the infected city of ChicagoOur biggest point of pride: multiple story endings - |
| Demo Update | 2026-01-13 | What’s new:Zombie spawn system overhauledZombie variety increased ~20xGameplay balance updatedUI/UX improvementsPerformance optimizationsFixed: overlapping voice lines from multiple refugees in the quarantine zoneThanks for playing the demo and sending feedback - keep it coming. |
| Release Date Announcement | 2025-12-22 | Dear friends,We’ve received a huge amount of feedback and thoughtful critiques. Based on this, we’ve decided we can’t launch without making the story accessible in more languages. We’re also improving the zombie spawn and attack logic, along with several other important features.We’re moving the release just a little into the future, and we do not anticipate any further delays. We’re happy to announce that Quarantine Zombies is coming out onJanuary 20th, 2026 for 9.59$ And there’s good news for today: we’re pushing an update to the current playtest build right now, addressing many of your reported issues. Plus, a new demo version will be live |
| New tools and critical bug fixes | 2025-12-07 | Here’s what changed today:Added tool: StethoscopeAdded tool: UV flashlight. After purchase, press T to switch lighting modes.New combat quests to clear zombie-infested areasCar repair progress now persists after reloading the day or continuing from a saveFixed freezes and crashes that could occur when opening the symptom checklistImproved zombie AIReduced VRAM and RAM usageOverall performance improvementsVarious bug fixesThanks for playing the demo and sharing feedback - keep it coming! |
| Dev Update: Major Improvements to the Demo | 2025-11-10 | Hey everyone!Our team has been hard at work improving Quarantine Zombies, and we’ve made a bunch of important updates to the demo version. Here’s a quick overview of what’s new and improved:Fixed issues with repeated refugee inspectionsAdded notifications for reward eventsAdded turrets and turret upgradesFixed bugs with delivery notificationsReplaced doors in quarantine roomsAdded new hit sounds for zombies and many other sound effectsAdded a function to open the central gate doorAdded new light sourcesAdded in-game graphics settingsImproved overall game performance (optimization work is still ongoing)Updated zombie spawn algorithmImproved we |
| Thank you to everyone! | 2025-10-16 | Our team is truly grateful that so many players have taken an interest in our project and tried out the demo. We’re actively improving it and releasing updates every day to fix the bugs you’ve found.Thank you all! Enjoy the game, and we look forward to your feedback! |