Good news for Linux users! The demo version is out now.
And I can finally confirm that the Linux version of the game will be available on release day, November 14. That's only 9 days away!
It's been confirmed to work on a Steam Deck too, but I can't guarantee that the controls are fully compatible. The game has been designed for keyboard and mouse, with some scenes requiring a mouse to proceed, but controller options will be looked into after launch.
As for a MacOS version, we're working on it, but there's some technical problems with launching the game. If it can't make it to launch, we'll keep trying and make it available as soon as possible.