Whether you are using a legitimate retail copy from Steam or troubleshooting an external software build, making a heavy strategy game like Civilization VII work flawlessly on Linux requires attention to a few critical components. 1. Proton and Steam Play (The Recommended Route)

: If you are using a .sh installer or launcher, right-click the file, go to Properties > Permissions , and ensure "Is executable" is ticked.

Replace it with the libsteam_api.so file found inside the razor1911 folder on the mounted .iso .