Compatibility Report

• Name of the game with compatibility issues: Sid Meiers Civilization 4 and all DLCs
• Steam AppID of the game: ?

System Information

• GPU: Integrated Intel UHD Graphics
• Video driver version: No clue
• Kernel version: no clue
• Link to full system information report as Gist:
• Proton version: Proton Experimental

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

Symptoms

Game launches fine, but no mouse clicks are detected. Keyboard and mouse movement input works fine, though.

Reproduction

Just launch the game