Thanks! It would be great to have the game on Linux (and Mac), but the game is a hobby project so right now I really only have time to maintain the Windows version. Sorry!
Does it run in Wine or one of the many front-ends that make playing games via that route easier? Graphically the game doesn't look complex, and optimized fps is not a concern, so I would expect it to be fine. Haven't tried it myself yet of course. (If you have no idea what I'm talking about, investigate Lutris)