The game art and music are great, however I think that controls in the description would've been nice. I could not figure out what to do in the second room. I played the web version.
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I have now given in another try and have updated my ratings. Overall I liked it. I am not sure if the last room qualifies as a puzzle, but it must've been something fun to program, so I give it a pass. The shadow labyrinth is also not a good idea in my opinion without sound cues when pressing you've pressed all the button. Other than that, I think that the difficulty curve is a bit all over, but since it's a jam, I get it. Great to see an Undertale inspired puzzle game!