I only see an exe file, so nothing actually possible to run. For OSX, there would need to be either a .dmg or a .app. Looks more like there just aren’t files for that export, and I just thought you’d like to know. As I recall on unity, you manually need to switch platform and run an export for each target platform
Now that aside, I did get a chance to try it! I’ll admit also getting stuck and not having quite enough inputs for what to do. I got the lamp and even got it to give what I gathered was the ‘success’ response, but still didn’t seem to clear the way forward, so I just got stuck in that first section. Shift also felt like a weird decision for moving forward, though I realize it’s due to the keyboard keys being pressed. Seems like walking and piano playing probably should have been two different modes. I also had to write down the order of the colors. Anyhow, sorry I didn’t get a chance to view more of the puzzle, it did look interesting, and fit the theme!