Unable to access external drive where my emulation ROMs are. This is a problem with all Proton games; directories external drives are commonly automounted on are not listed when browsing Z: (which Wine mounts as / ). Nothing in Steam, Proton, or this game is installed on an external drive; it's installed on my normal drive, but any game which allows browsing to a local file hides directories commonly used for automounting. Audiosurf is another game where this is an issue.