Quarantine Zone: The Last Check
by Brigada Games · 12 Jan, 2026
2,292 downloads
About the Game
Armed with advanced screening tools and your own instincts, you must decide who gets through and who stays behind. One wrong choice could let the infection slip past your post.
But holding the line is only the beginning. You’ll need to manage scarce resources, reinforce defenses, and keep your camp alive as chaos intensifies with each passing day.
SEE IT? SORT IT
Use high-tech tools to uncover signs of infection among the terrified survivors. Identify contraband, forbidden items, and even rare collectables as you work to keep your checkpoint secure. Send those with suspicious symptoms to quarantine for observation, to the lab for additional screening, or save healthy survivors by sending them to the living block. And those who show to be infected… well, they don't stand a chance anyway.COMMAND THE CATASTROPHE
As the survivor population swells, you’ll be relied upon to provide essentials such as power, food, and medicine. When the alarms are raised, pilot armed drones to ensure the infected don’t breach the compound. The better you manage your ever-expanding base, the more resources, tools, and weapon upgrades you’ll unlock.LEARN. ADAPT. SURVIVE.
When a quarantined survivor becomes an undead predator, all is not lost! Keep newly turned zombies confined to harvest and prepare samples in return for new tools, staff XP, and long-term upgrades. Individuals with unknown symptoms can also be analyzed, but these tests are always fatal to the subject. Will you choose to preserve life? Or will you pursue knowledge at any cost?Screenshots
15 images
Version Information
Steam Patch Notes
Official update history
Hello, everyone!
We are back with another patch as we continue our work on resolving issues based on your feedback and reports.
Changelog:
Miami Fixes
The head is visible when rotating the camera during a certain dialogue on Day 1 (at the start of the game, before the player has picked up the radio, while actively rotating the camera)
Softlock on automatic tool switching while zoomed in (the wanted tool is automatically equipped on Day 4 when an NPC is called; if you enter zoom with it and wait for the switch, you can stay in zoom and a couple of controls stop working)
Softlock on Day 4: interaction with the NPC in Quarantine disappears if an NPC was sent from there to the Laboratory (from Day 1 to Day 4, at some point in the game, the Laboratory could be seen unlocked; if an NPC was sent there, it blocked calling others)
On Day 6, the plunger may not spawn in the toilet if the doors are opened too quickly
A guard is standing inside the truck geometry on Day 8
Possible softlock at the “Taste the Oracle Mushrooms” step
The damage sound doesn’t turn off on the death screen
Laboratory occupancy doesn’t update until the object reaches full capacity
Mutation fixes - Tadpole
The player can conduct research in the lab while being a zombie
The mechanic’s cabin gets blocked if a dialogue with him is started by opening the tablet
Fix for the female survivors FX during mutation
Bent Posture fixes
Torres may spawn about 600 m from the playable character after being shot
If the player breaks down the neighboring door, the guard doesn’t react
Small fix to the UV stick animation
Switch the automatic removal of the wanted sign to a timer
The Compulsive Scratching syndrome doesn’t turn off while holding a bag
New icon for the shocker “virus” animation
Infected crawlers symptom for bodybuilders
The streamer (big biker)’s hands clip through his stomach with the Infected crawlers symptom
Old screenshots in the Miami handbook (Quarantine and the contraband table)
The playable character’s arm does not mutate during the first cutscene
The button focus is displayed only at the top edge
It’s dark in the Quarantine tent
Chicago Fixes
Added checkbox for skipping the drone defense (it’s enabled in Settings)
A large number of items that cannot fit on the table
Changing the weapon type in the drone using the controller always skips the next weapon
The rain sound plays, and then the intro plays (when creating a new save in Chicago)
The rain VFX is missing, but the rain sound plays
NPCs clip into geometry when sitting on the bench in the Survivor Block
General Fixes
Performance fixes
Sound refinements
Some of the music and sound effects don’t respond to the corresponding volume sliders
Fixed the missing option to disable cameos (it’s enabled in Settings)
Incorrect markup and selection of voices for Chicago and Miami
Mark up all surfaces for footstep sounds: metal, asphalt, wood
The backpack-removal animation is broken after the addition of bags
Incorrect switching between displays (technical bug when switching between 2 monitors)
Fixed a “hole” in the side of the full character model
Logging into mod.io via Steam doesn’t work: players have to register by email
We will continue our work on improving the experience and we appreaciate all of your feedback.
Hello!
As promised, we are delivering the next patch for Quarantine Zone post launch of Miami Update. We will continue our work on processing and addressing your feedback that is most helpful to resolve and address various issues encountered so far.
Changelog:
Chicago campaign:
Fixed missing choice widget on the bad ending in Chicago
Fixed imperfect inspection when sending the 1st NPC in Chicago
Fixed a bug when a random NPC is sent from Quarantine to the Laboratory, the following NPC can be called to the checkpoint
Fixed the disappearance of our beloved cat from Chicago campaign
Miami campaign:
Fixed low shadow quality in Miami
Fixed several Miami campaign environment issues
Fixed collisions in Miami campaign where player could fall through the ground when moving the flask during the “Mixed Signals” quest
Fixed images for the dog in the Miami campaign handbook
Fixed an issue preventing players from finishing any game day in Miami
Fixed missing voicelines if an NPC has Involuntary Groaning symptom
Fixed the issue causing freeze and loss of control during NPC mutation
Fixed an issue causing NPC to be removed from the cell after the Torres quest
General issues:
Fixed incorrect statistics display stating that NPC is both alive and dead if he or she was sent to quarantine
Fixed incorrect visual cue for stethoscope (doesn’t turn red when a serious lung disease is detected)
Fixed resolution changing in settings not applying properly
Fixed several GPU-related crash issues
Fixed Sound FX settings issue where some music and sound effects did not respond to the corresponding volume sliders
Fixed female NPC's model clipping
Additional localization fixes
Fixed NPC lip sync issues (the mouth opens, but the voiceover doesn’t play)
Hello!
We are continuing processing and addressing feedback from the community regarding issues and bugs players encountered since the release of the Miami Zero update,
Changelog:
Fixed the bug with re-inspecting a survivor in Quarantine (Chicago) if the survivor died and became a zombie
Fixed an issue when character stays with a clenched fist after dropping contraband
Fixed several localization fixes
Fixed several issues with the character getting stuck on a scene
Fixed the bug when the tool that was obtained too quickly at the start of the day malfunctioned.
Fixed an issue where some music and sound effects did not respond to the corresponding volume sliders
Fixed an issue where player would choose to stay in the camp upon completing the campaign, the game restarted to the first day
Fixed a FX issue where feeding a character to the shark, the body parts are the wrong color
Fixed the bug where sending the doctor to the Yacht too quickly forces the player to send the next survivor to the Medbay
Hello!
This is a small update aiming to address the initial round of feedback we've received from the players who already started their Miami Zero playthroughs.
Changelog:
Fixed closing on female survivor
Fixed duplicated text in the Yacht popup
Tattoo spawn chance in Miami campaign adjusted
Low text contrast adjusted
End of day Yacht report now correctly displays info (i.e. alive survivors no longer listed as dead)
Hello, everyone!
We'are continuing our work improving stability of the game over thanks to the data provided by players participating in test branch.
Patchnotes:
Fixed raytracing-related GPU crash
Updated engine's codebase, potentially fixing hair rendering and an additional fix for rendering pipeline related crash
Hello, everyone!
Thanks to the test branches we opened over the weekend we were able to address more of the crashes, thanks to additional data provided by our players.
Patchnotes:
Fixed more of AMD related GPU crashes
Fixed crash related to using FSR upscale regardless of GPU Vendor.
Hello, everyone!
While the list of changes is not extensive, we’ve addressed multiple issues leading to CTDs. Our team continues to work on improving the stability of the game post Unreal Engine 5.7 update.
Patchnotes:
Fixed multiple issues causing CTD (crashes)
Fixed a softlock during base management tutorial
Fixed "Father's Burden" bulletin board task issue that caused "Eye See You" task to fail and lock further progression
Fixed Audio FX issue related to rain sound not being able to turned off
Known issues:
CTDs related to AMD GPUs - our focus is on this as it’s affecting a number of players. We’ve narrowed it down thanks to additional reports and log files provided by the community and are actively working on a solution
On the topic of AMD GPUs - a temporary workaround:
Use “-dx11” launch option on Steam.
Note: This will affect graphical fidelity of the game, but should alleviate the main cause for the crash.
How to add the launch option:
Select Quarantine Zone in your Steam Library
Right click -> Select Properties
Go into “General” tab -> type in “-dx11” in Launch Options
Start the game
[img src="{STEAM_CLAN_IMAGE}/45434646/ee99059d6b2b0b2203262c82d6582dc73e46ae5d.png"]
Hello, everyone!
A small patch before the weekend.
Changelog:
Fixed memory leak caused by fast opening UI tablet by pressing "C"
Fixed "Modern Prometheus" bulletin board task
Fixed "Eye See You" bulletin board task
We are looking to release a more comprehensive patch by the end of next week, addressing more of the issues reported by our players.
Hello, everyone!
Here's another patch for Quarantine Zone. We are trying a slightly different structure to the notes, which should improve the readability. Tell us what you think in the comments.
The team is already in full-scale work for the first major update to the game, which we can't wait to show you and what we have in store for the immediate future of Quarantine Zone. In the meantime, we'll continue working on fixes for the game, albeit at a somewhat slower pace. Without further ado, the patchnotes:
Fixes:
Opening the Tablet immediately after using the Matioscope no longer causes a softlock
Opening the pause menu a few times during the first cutscene caused the playable character to become unable to move
On Day 8, players were able to send the first survivor to the living block before the tutorial started, which prevented further progression
The quarantine area cannot be cleared until the tutorial from the "Hi, doggy" bulletin board task is finished
The paint stains on the vandal's clothes do not appear if the flashlight is turned on prior to the playable character entering the Survivor's Block during the "Ask your mom" bulletin board task
The final dialogue in the quest "Hi, doggy", in certain cases, used to be unskippable
Text during dialogue skipping remained on the screen for too long compared to the time it takes for the character to finish speaking their line
Detector previously wasn’t correctly notifying players when any of the survivors possessed either drugs or weapons
Mathiascope-related symptoms did not appear in survivors sent to quarantine when they should have
The bulletin board tutorial previously incorrectly stated that there are Major and George tasks, but George's tasks are no longer included in the title
Dans Gaming cameo no longer spawns as early as Day 10, preventing the player from encountering symptoms that have not yet been discovered
Survivors no longer perform the backpack removal animation without wearing a backpack if the animation was interrupted
The survivor's backpacks no longer have an invisible collision wall, which used to make them bulletproof
Soldiers from the Security Tower are no longer standing in an A-pose
Getting up from the crouching position while standing on the lab's bed no longer causes the playable character to be unable to move
Double-clicking the generator's power button no longer turns it off without providing any indication of its status
"Interacting with the cart while looking at it previously caused several issues:
The body bag is inside -> the Player cannot exit the cart while looking at it.
The cart is empty -> when the Player enters the cart, exits, and re-enters while constantly looking at it, they will not be able to jump anymore."
Performance - Walking into the Soldier collectable in the Garage area causes significant framerate drops
Changelog:
Updated physics for extracted organs in the science lab
Optimised lighting in the quarantine
We keep an eye out for any of the information that you share with us both here on the Steam Community Forum and on our other social media, including our Discord community.
Thank you for your continued support!
Hello, everyone!
Here's another Quarantine Zone hotfix - more changes and fixes based on community feedback and bug reports.
The team has already started work on new content for the game, and we'll be sharing info on that as soon as we are ready.
Changelog:
Day 8 – "Ask Your Mom" – task description is untranslated during objective change
Day 8 and 9 – Quest "Ask Your Mom" reappears on Day 9 after being completed on Day 8
Day 8 – The laboratory tutorial progresses when the Player opens the tablet while inspecting a survivor in quarantine
On Day 8, restrictions on entering and checking quarantine before starting the main lab bulletin board task were removed
The "Ask Your Mom" bulletin task does not progress after killing Abe Crow
Fixed the issue when interacting with Charlie with a Valentine's Day emote that causes several issues later when inspecting survivors with contraband
Fixed the issue where the player receives a penalty after sending a survivor with internal contraband from Quarantine for re-inspection
Fixed the issue where NPC and zombie sounds persist after death
Fixed several minor issues with the Warehouse NPC, including one where warehouseman NPC has no collision
Fixed padding for settings screen elements
Fixed collisions that allowed the player to climb onto dead body bags to access an out-of-bounds area
Fixed the issue causing the Lab screen textures load incorrectly
Fixed the issue where the player can use the UV light before the tutorial starts
Fixed the issue during organ extraction, where the game forces the Player to make a mistake to extract a specific organ
Fixed the issue that caused some assets to appear see-through in the apartment buildings
Fixed an issue with the transition from crouch to sprint when sprint is activated
Fixed blurry textures in refugee photos
Fixed the issue with Matiascope in Endless Mode that caused all symptoms to be no longer visible while using it
Changed texture filter to Nearest, fixed UI compression
Added Additional military escort animations
Added 2 new streamer cameos: Tholar and Auron
Removed the teeth necklace and the blood vial from the baggage generator
Replaced the icon for the side quest tracker
Note: We will be adding the option to toggle appearance of cameos in the future, it requires more work to just add it as a part of regular hotfix, but it will be done as part of one of the future content updates. Same goes for being able to encounter said cameos in existing saves.
We keep an eye out for any of the information that you share with us both here on the Steam Community Forum and on our other social media, including our Discord community.
Thank you for your continued support!
Hello!
Earlier this week, we opened an open beta branch to test if our solution for the FOV bug is working properly for the players:
[dynamiclink href="https://store.steampowered.com/news/app/3419520/view/517487250982832443"]
We've received enough feedback to confirm that the fix is working, and this change is now included in the main branch of the game.
There will be another patch later before the end of the week with more fixes based on players' reports and feedback.
Thank you for your continued support!
UPDATE: This hotfix has been rolled back after a progress-blocking bug was discovered. We apologize for the inconvenience.
Howdy folks, here's the freshest Quarantine Zone hotfix - delivered straight to your internet-enabled computer box.
Changelog:
\ Fixed instances where the assigned button to purchase an upgrade is different than what is shown on screen
\ Fixed instances of multiple instances of breathing sound effects overlapping
Fixed a glitch where opening the settings menu during the tutorial causes the tutorial to lose focus and become inactive
Fixed bug which caused the tablet curor to disappear after pressing the Q key
Survivor age in documents should now be more accurately portrayed by the refugee’s face model
\\ In the control settings, the button to toggle the flashlight should now be shown in the controller mapping
\ Fixed an instance that, when using a controller, symptoms would fail to become highlighted if they have already been previously selected.
Fixed a bug that could occur when conducting analyses on multiple samples in the laboratory and only a single symptom would be conveyed to the player.
Fixed a bug that previously allowed players to buy the cage before the tutorial, blocking them out of future progression.
Fixed a bug which would prevent controller players from restarting the game after a day has ended without having the required amount of money
Fixed instances where selecting UV symptoms would always in a poor inspection
Fixed a visual glitch in which survivors could be carrying a doorframe prop in their backpacks
The Valentine’s event duration has been extended to two weeks.
\\ Fixed a bug that would cause the game to become unresponsive if the pause menu was opened before the drone defense mini game.
6 new streamers cameos:
Real Civil Engineer
Chasing Skyler
xAcception
Samwitch
Special Edd
Gremix
Note: We will be adding the option to toggle appearance of cameos in the future, it requires more work to just add it as a part of regular hotfix, but it will be done as part of one of the future content updates. Same goes for being able to encounter said cameos in existing saves.
We are still working on addressing the FOV issue and are close to having a proper solution ready. More time is needed, as we want to make sure the eventual fix will work for all players.
We keep an eye out for any of the information that you share with us both here on the Steam Community Forum and on our other social media, including our Discord community.
Thank you for your continued support!
Current Release
Build 26250560
Uploaded Oct 30, 2026
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System Requirements
How to Install
QZSim.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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Download Quarantine Zone: The Last Check for PC with a direct link or via torrent. Get the full version of Quarantine Zone: The Last Check for free. Quarantine Zone: The Last Check is a Indie released by Brigada Games.