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Starting your troubleshooting from this section is important because these steps will not only often fix most problems, but will also keep your system and game in good health so that new issues won't occur.
Please note, that we can't support the cases where user is using an unofficial or modded Steam client (which was modified by a third-party). The same applies to illegal copies of the game.
- Open Steam client and enter your Steam Library,
- Select Yet Another Zombie Survivors,
- Click the cog icon (Manage), and then "Properties...",
- Switch to "Installed Files" tab, and press "Verify integrity of game files".
- Close the window - Steam will check and re-download files in background.
Note: Modding the game can cause multiple different issues, or even cause it to not launch at all. In such cases, verification might not help. When modding, please make sure you know what you're doing, and you remember which files have been added by you to the game's directory.Especially important updates to install:
Exceptions in which updating is NOT recommended as of April 2025:
In the case of graphics drivers, it is highly recommended to install new GPU drivers after doing some cleaning to uninstall the previous ones, and using "Fresh install" options in their respective installer programs!
How to clean install of GPU drivers to avoid any potential issues:
- Open the game's page in your Steam Library,
- Enter the game's properties (cog icon), then the Compatibility tab,
- Enable "Force the use of a specific Steam Play compatibility tool",
- Set Proton version to latest (highest) one, such as 9.0 or higher.
In the case that a future Proton version breaks the compatibility with the game, you can try switching back to default version, or try different Proton versions, like "Proton Experimental" or "Proton-GE" (needs to be added with "ProtonUp-Qt" or similar application, in desktop mode).❗First, please double-check the steps listed in the "Important steps - START HERE!" section. Especially that:
- You're meeting the minimal requirements,
- You're running a clean, unmodified Steam client,
- Your Steam client has connection to the internet (for the first launch),
- You're logged into an user account that has access to the game
- You're launching the game directly through Steam Library.
- You have verified the game files on Steam.
- Your system and drivers are up-to-date.
If the game still doesn't work, try the following:(it was bought, or can be accessed through Steam Family Sharing service),
- Close your Steam client completely,
- Wait around 30 seconds to make sure the Steam process is closed,
- Right-click the Steam application icon and select "Run as administrator",
- When Steam launches, try running the game from your Steam Library.
If running Steam as admin helped, there might be a problem with your Windows user account not having enough privileges set for the game to work correctly. Consider increasing your user privileges or setting Steam to always start with admin privileges by going to the application Properties (see step three, but instead of "Run as administrator", select "Properties"), Compatibility tab, and toggling "Run this program as an administrator", then hitting "Apply" or "OK". You can do the same for the game itself (check the path to the exe file in the step below).The default locations of the Steam client:
The default locations of the game (Yet Another Zombie Survivors.exe):
In some rare cases, the antivirus will still block the game or Steam from working correctly (accessing files on your disk drive), even when the game is added within its exclusion settings. When this happens, turning it off will fix this issue, but will also decrease the security of your system. In such cases, we suggest that you consider changing your antivirus software to another one.
- Make sure the game is closed.
- Please check this pinned forum thread on how to find your save file: ``YAZSGameSave.es3``
- Open this file with any text editor (e.g. right-click -> Open with... -> Notepad).
- Search the file (CTRL+F) for "Opt_ResolutionX" and change the "value" number right below it to: 1280
- Right below it, in "Opt_ResolutionY", change the "value" number to: 720
- Scroll down to or search for "Opt_FullScreenMode", then change its value to: 0
- Save the file and start the game through Steam. If the Steam prompts you about Cloud Save differences, choose to use the local save files.
The resolution values should look like this:- Open Steam client and enter your Steam Library,
- Select Yet Another Zombie Survivors,
- Click the cog icon (Manage), and then "Properties...",
- Enter any of the parameters listed below into the text field under the "LAUNCH OPTIONS":
Force the game to use OpenGL:Force the game to use DirectX 11:
Force the game to use DirectX 12:
The above might help, but can also decrease the framerate or even cause the game not to launch at all. In the case the above don't help, remember to remove these starting arguments to return to game's defaults.
If the above instruction didn't help, please contact us directly and let us know that you've tried the troubleshooting steps but they didn't work.
❗First, please double-check the steps listed in the "Important steps - START HERE!" section. Especially that:
- You're meeting the minimal requirements,
- Your system and drivers are up-to-date,
- Your BIOS is up-to-date when using Intel 13th- or 14th-gen Processors,
- Your Nvidia GPU drivers version is 566.36 when using RTX 40xx or older,
- You're running a clean, unmodified Steam client,
- You're launching the game directly through Steam Library,
- You have verified the game files on Steam.
If these issues are still happening after that, try the following:The default locations of the Steam client:
The default locations of the game (Yet Another Zombie Survivors.exe):
In some rare cases, the antivirus will still block the game or Steam from working correctly (accessing files on your disk drive), even when the game is added within its exclusion settings. When this happens, turning it off will fix this issue, but will also decrease the security of your system. In such cases, we suggest changing your antivirus software to a different one.
- Check the graphics card display connections on the back of your desktop PC.
- Check if cable types are the same for two or more of your displays (e.g. HDMI or DisplayPort).
- Swap the connected displays slots if the cable types are the same.
If possible, you might also try changing the cable types to a different ones that are supported for both your display monitor and the graphics card you're using. It's also recommended to disable G-Sync and/or FreeSync modes in your GPU and display. For more information on that, please refer to the "Low framerate (FPS) or stuttering" paragraph below.We appreciate your help in troubleshooting this, so to greatly speed up the process of us updating the game with a fix, please let us know that you've encountered the issue by writing us an email.
When possible, include the following (to open the listed locations, simply copy and paste them into a Windows Explorer window, then press Enter):
- Press the Windows keyboard button, search for "dxdiag.exe" and launch it,
- Wait for the DirectX Diagnostic Tool to fully load (the progress bar disappears),
- Press the "Save All Information..." button at the bottom, and save the DxDiag.txt file.
Thank you for your help in our mission to fix any of the remaining issues!
❗These issues are almost always not caused by the game itself, but this and any other applications can trigger these reactions, especially when said applications are games that put higher pressure on your computer's components.
❗First, please double-check the steps listed in the "Important steps - START HERE!" section. Especially that:
- Your system and drivers are up-to-date.
- Your BIOS is up-to-date when using Intel 13th- or 14th-gen Processors,
- Your Nvidia GPU drivers version is 566.36 when using RTX 40xx or older,
- You're running a clean, unmodified Steam client,
- You're launching the game directly through Steam Library.
If the above steps are taken, but the game still causes your PC to crash, we recommend consulting an IT technician, as certain hardware elements of your build can be causing these issues (PSU, CPU, RAM, GPU, Motherboard). Still, if you don't mind troubleshooting on your own, please consider the following:- HWMonitor
- Core Temp
- AIDA64
If your CPU or GPU temperatures are reaching or exceeding 90°C / 194°F, this means your processor and/or graphics processing unit are overheating. If possible, please consult an IT technician on how to remedy this, or clean and underclock your hardware.Please refer to your motherboard's manufacturer instructions on how to access the BIOS, and turning the XMP profile off. If you've ever overclocked your processor, RAM, or graphics card, this is also a good time to restore these settings to default.
Similarly to the step above about overheating, in the cases of unstable hardware, underclocking (temporarily making your PC less efficient on purpose) can also be a beneficial option to consider.
If your PC has more than a single drive available (SDD or HDD), please try installing the game to exclude a potential issue related to the drive you're currently using. To check if there are other drives available, do the following:
Here you will see a list of either partitions or drives available on your PC. While creating a new library location on a different partition of the same drive will not help, it's very likely that other available locations displayed are partitions of other drivers, so if there are any, Add them. After that, you'll be able to both install and move your Steam games to this new location. Please try doing so with Yet Another Zombie Survivors and check if it helps. You can also create new libraries using an external HDD or SSD drive, but remember to plug them first before launching the Steam client.
In addition, if you're using an encrypting solution, such as VeraCrypt[www.veracrypt.fr], please consider completely decrypting the drive for testing purposes, as there are known issues with how some of the disk types (e.g. M.2 NVMe) can cause sudden system freezes and crashes, especially when the C:\ drive is encrypted.
- Check the graphics card display connections on the back of your desktop PC.
- Check if cable types are the same for two or more of your displays (e.g. HDMI or DisplayPort).
- Swap the connected displays slots if the cable types are the same.
If possible, you might also try changing the cable types to a different ones that are supported for both your display monitor and the graphics card you're using. It's also recommended to disable G-Sync and/or FreeSync modes in your GPU and display. For more information on that, please refer to the "Low framerate (FPS) or stuttering" paragraph below.If the above instruction didn't help, please contact us directly and let us know that you've tried the troubleshooting steps but they didn't work.
When contacting us, please provide us with your DxDiag.txt file:
❗First, please double-check the steps listed in the "Important steps - START HERE!" section. Especially that:
- You're meeting the minimal requirements.
- Your graphics (GPU) drivers are either up-to-date or using the
- Your BIOS is updated if you have an Intel 13- or 14-generation CPU.
If the problem persists, try the following:recommended drivers if you have GeForce RTX 40xx or lower.
- Launch Yet Another Zombie Survivors,
- When in main menu, enter Options,
- In Options menu, switch to the Graphics tab,
- Press the "Vertical Synchronization" option.
Turning this option OFF fixes most reported problems of this nature, but you can also experiment with switching it ON if it was disabled previously, as well as setting a custom framerate limit (when it's OFF).On Nvidia graphics cards:
- Right-click any empty space on the Desktop and select "NVIDIA Control Panel",
- Under 3D Settings, select Manage 3D Settings,
- Find the Monitor Technology setting, open the drop-down to its right, and set it to "Fixed Refresh",
- Press the "Apply" button at the bottom.
On AMD graphics cards:- Discord (in-game overlay)
- Lossless Scaling
- AMD Afterburner
- RivaTunerStatisticsServer
- f.lux
There might be other similar apps causing framerate drops, so be sure to try disabling every application running in the background to double-check if any of these cause potential issues in your current setup.If closing a certain application helps, it doesn't always mean you won't be able to use it when playing, but you might need to adjust its settings, searching for options that might cause the framerate issues, especially when it comes to on-screen-display functions (OSD).
Force the game to use OpenGL:
Force the game to use DirectX 11:
Force the game to use DirectX 12:
The above might help, but can also decrease the framerate or even cause the game not to launch at all. In the case the above don't help, remember to remove these starting arguments to return to game's defaults.
If the above instruction didn't help, please contact us directly and let us know that you've tried the troubleshooting steps but they didn't work.
❗First, please double-check the steps listed in the "Important steps - START HERE!" section. Especially that:
- You're running a clean, unmodified Steam client,
- Your Steam client has connection to the internet (for Steam Cloud),
- The Steam account you're logged into was the exact one
If the issue still exists after that, try the following:you've played the game on before the progression was lost.
If you've played the game on a computer that had Steam Cloud setting disabled or haven't been connected to the internet, your progression won't transfer from that PC to another, so that progress can get lost.
Important: If you've lost your progress after having played the game at an internet cafe or any other public computer, it's most likely the Steam client there haven't had Cloud Saves enabled or it hasn't managed to upload the save onto the cloud when you've quit the game and logged out or turned it off too soon. This is something we have no control over, so please be careful when using other PCs in cafes or other public spaces.
To reset your save you're required to press this option and then press and hold a confirmation button, so that it can't be used by an accident. Still, there might be cases that someone else who has access to your PC (e.g. your siblings) could have used it.
If this option was used, don't worry! You can restore your save from a backup (see point number 4 below).
If the above instruction didn't help, please send us your save files and we'll fix them for you.
The game is an auto-shooter, but you can also manually control both your aim direction and attacks from your weapon. If the characters stopped aiming by themselves or no longer attack on their own, do the following:
- Press the E keyboard button to switch the aiming mode.
- Press the R keyboard button to switch the firing mode.
OrIn case of any issues related to how the camera works when playing the game, please try the following:
- Launch Yet Another Zombie Survivors,
- When in main menu, enter Options,
- In Options menu, switch to the Accessibility tab,
- Change the "Camera Movement" setting to "Centered".
This setting is especially recommended in the cases that the camera movement is causing you to feel naseous, or it causes you motion sickness / headaches.While the camera distance itself is tied to multiple important parameters of the game, from optimization, to balance, and it can't be modified in the current version, we hope that the above setting will help in most cases of troubles related to how the playable field is displayed.
To unlock higher difficulty levels, you first need to either win a run or survive a set amount of minutes of each game mode on each of the maps. The unlocked difficulty levels are separate for every map and each game mode. Unlocked difficulty levels can be selected on the "SELECT LOADOUT" page, right before you start each run.
To unlock new game modes, you need to either win a run or survive a set amount of minutes in the highest game mode you have unlocked. These unlocks are separate for each of the maps.
To unlock a new map, you only need to win a Default mode run on the last available map you have unlocked so far. There might be maps that require other conditions to unlock, which you can check by hovering over their icons, unless either the map or the conditions are secret.
Note: Not all maps are unlockable in the Early Access version.
Each playable character (Survivor) has three tiers of weapons in their kits. You will progress each game by starting with the first tier option. After ranking it up to rank 4 with level-ups, you'll be able to change your weapon into its tier 2 option. After doing the same 4 rank-ups with the tier 2 option, you'll be able to roll and select one of up to three different tier 3 weapon options. Here's a graph of this progression for the SWAT Survivor:
As you collect the Specialization points on each of your Survivors, you'll unlock new weapon options for them. These options will always have their respective tier tied to them. As such, if the weapon you're looking for is of the same tier than the other(s), you'll need to pick it instead of the other options of the same tier. Taking the above example - you can never have the Assault Rifle and the Grenade Launcher at the same time, nor can you evolve one into another by ranking it up.
To see your available weapon options, check any of the following:
To add a verification video, you need to enter the Leaderboards menu from the Main Menu screen. Once you select the parameters of the run you've played, there will be a text bar near the bottom of the screen. Here, you can paste the address to the video you have previously uploaded to any of the supported video sharing platforms.
At the time of writing, you can upload your videos to:
- YouTube.com
- Bilibili.com
Once the video is uploaded onto any of the above platforms, copy its link and paste it into another tab of your internet browser to double-check that it's correct and it links to your verification video.With a confirmed link, go back to your game, and paste that link into the text bar mentioned above. Check if the link is correct (it should starts with "https://" and ends with either ".com" or its local domain equivalent), and press the button to the right to upload it.
Your verification video should appear by your score on the Leaderboards. If this is not the case, please contact us directly and paste your video link in the message content, so that we can check what could be wrong.
This is most likely due to Effect Transparency (Accessibility) option being set to a high amount. The Effects Transparency percentage shows the amount of transparency applied, so when at 100%, most in-game effects become fully transparent.
Please do the following:
In most cases, this might indicate that the HDD/SSD drive the game is installed on is either slow or it might even be reaching the end of its life.
If your PC has more than a single drive available (SDD or HDD), please try installing the game to exclude a potential issue related to the drive you're currently using. To check if there are other drives available, do the following:
- Open Steam client and press the Steam logo in the upper left-corner,
- Select "Settings", then switch to "Storage" tab.
- Open the drop-down menu under the "Storage" header text.
- Select the "Add Drive" option.
Here you will see a list of either partitions or drives available on your PC. While creating a new library location on a different partition of the same drive will not help, it's very likely that other available locations displayed are partitions of other drivers, so if there are any, Add them. After that, you'll be able to both install and move your Steam games to this new location. Please try doing so with Yet Another Zombie Survivors and check if it helps. You can also create new libraries using an external HDD or SSD drive, but remember to plug them first before launching the Steam client.Note: If the game loaded faster in a previous version you played in the past, it's most likely due to the amount of content we've added since then. While we're doing our best to optimize this process, the more content we add to the game, the longer loading screens can become, which is a natural process.
This happens most often due to the Steam or the game itself not having enough system privileges to create and modify files in the save game location. Please check if there are any error details displayed in the main menu, as we've programmed a notification that will let you know about this and propose solutions.
Setting the Steam and the game to run as administrator and adding them to your antivirus exclusions should help in most of these cases. Please follow the instructions in the "Game doesn't launch or starts but closes" section on how to apply both fixes.