Linux user here, I'm having trouble running the game. Well, it runs, and I get sound, but the video is just a flashing screen that varies in colour from gray to green to blue and back again.
When I run it using the terminal, it says it's unable to preload ScreenSelector.so and libsteam_api.so, so maybe it's got something to do with those. Both are in the Plugins folder, so they're present just apparently not preloading.