Thanks for bringing this to our attention!
I know there was progress on a full Linux version, but ultimately, right now we don't immediately support it. We have heard varying success from Windows emulator users, but the experience with that will probably never be optimal.
I believe the game is tagged with Linux because we have a Linux demo available. I can see how that would be misleading though, so I'll ask the team about that.
Thanks again, and I hope this at least helps clarify our intentions here! Also, thank you for supporting the bundle!