Hi!
The Windows build includes what appears to be the source code of the game:
Dunno if it's on purpose or it was an accident, but since devs don't usually share source code for their commercial products (games like Doom and Anodyne being outliers), I thought maybe it'd be interesting to tell you guy(s?) about that.
Still, if the code could be left available, even with the game being a commercial product, it would show, at the very least, a vote of confidence, specially with how Unity (the company behind the engine) behaves.