can't start Just cause 3 using proton GE
Just Cause 3 does not have a DRM-free version (Steam is required, wherever you actually buy it from). As such, I'm guessing you're using a pirated copy, which we don't support.
If you do own the game on Steam, run the game through the Steam Client for Linux instead
If you do own the game on Steam, run the game through the Steam Client for Linux instead
