This is a really neat demo! Would absolutely love to play a whole game based off this concept.
The renders are super well done and atmospheric, and the layout really brings out the curiosity wanting to know more about the place and that exactly happened there.
I had trouble getting the sound to work until today. Doesn't seem to initialize the OPL at all on normal DOSBox. I was finally able to hear the music today when I tried it on DOSBox-X.