


The game is supposed to be native but I can't make it run without switching to proton.

gamemoderun %command%
When running the game natively all I saw was some flashing colors on the screen and the menu didn't even pop up. Had to switch to forced Proton Experimental and run the Windows version for it to run normally. When ran through Proton however it simply ran flawlessly
The native executable doesn't seem to work but Proton works just fine.
Game launches into blank screen without tinkering. With ProtonGE it launched and played perfectly.

This custom version works on Mint 20.2! https://github.com/GloriousEggroll/proton-ge-custom/releases/tag/5.8-GE-2-MF
For normal Steam: https://www.youtube.com/watch?v=7vYdjnZEPm4
Flatpak Steam: unzip to: ~/.var/app/com.valvesoftware.Steam/data/Steam/compabilitytools.d/
and then I had to install Mono for Wine:
- Open the Menu, search for Synaptic and open the Synaptic Package Manager afterwards.
- Once it has been loaded, search for mono-complete. You should get one result only.
- Right-click on it and select mark for installation.
- Once done, click on apply to run the installation on your system. You will receive a prompt detailing all changes that the installation will make to the system and files in the process. Click apply to proceed with the installation. If everything goes well, Mono should be installed in the end on your system.

Installs and starts, but only provides background audio for main menu
The screen will flash a white panel briefly before fading to black, stobes a gray-green, and then back to black with an ambiance track playing in the background. Nothing is presented on the screen. Hopefully this is fixed soon.

After menu and game-loading icon, screen stays black. (No in-game sounds behind black screen)
Actually defaults to 'Steam Linux Runtime'(linux native coming?), but that just blinks the screen few times and not even a menu.. Alt+F4, or steam in-game layout 'Force quit' required. But changing to any Proton version from 3.6 to 5.07 and the menu works.. Yet that's about it. Tho' still cannot be sure if some residual settings from the demo I played outside of steam some time ago.. As steam/game did recognize 3versions of the same save. This is just my experience, but anyhow.. If you played the demo(which btw, worked fine), I'd atleast recommend making the previous saves and possible configs unavailable for the moment, as in my case I do not know if they did any harm, but they sure weren't of any help. (I'll move'em myself as soon as I find'em. Probably somewhere with games working title 'once upon a coma')