Having issues with Mercury Fallen? Please review the following information for troubleshooting steps.
Please ensure your system meets the minimum system requirements. System requirements are shown on the Steam store page. Mercury Fallen requires a DirectX 11 compatible video card on Windows systems.
Some issues can be caused by out of date video card drivers. Ensure you are using the latest video drivers/software for your video card. Below is a list of common video card manufacturers and links to their respective website. Make sure to get drivers that match your video card hardware.
Video Card Manufacturers
NVidia – nvidia.com
Intel – intel.com
Sometimes Steam may not install or update Mercury Fallen correctly which can lead to various issues/crashes. To verify your installation please follow the below instructions.
Open your Steam Library
Right Click on Mercury Fallen and select Properties
Click the Local Files tab
Click Verify Integrity Of Game Files
Steam will check the local game files and attempt to update/fix installation issues.
In some cases, on MacOS, the game may crash at startup with a thread issue related to the UnityGfxDeviceWorker contained in the crash log. If you are experiencing a crash on startup on MacOS, please try the following:
Right Click/Control Click Mercury Fallen in your Steam Library and select Properties
Under the General tab click Set Launch Options…
In the input field put: -force-glcore
Mercury Fallen will now use the 3/4 OpenGL profile. This should resolve the startup crash on MacOS in some instances.
As new updates for the game come out, save games created in previous versions may not work as expected or not work at all. This is a natural side effect of the Early Access format. While I generally do my best to support save games between versions, there may be some updates/larger changes that mean older save games are no longer compatible. While not always a requirement, it is recommended to start a new game when new updates come out.
If you are still experiencing issues you can post in the Steam discussions or use the contact form on the Mercury Fallen website. When reporting issues/bugs please provide a detailed description of the issue that you are having and, if possible, how the issue can be recreated.