Very fun. The idea is quite unique, and the music is slightly annoying in my opinion but still pretty fitting. Simple and quick to understand- I loved the implementation of the theme. Art is quite good, too. To the numbers:
Art: 9/10
Music: 7/10
Implementation-programming: 8.5/10
Theme: 10/10.
This will definitely place pretty high in the jam- and it's very impressive that you supposedly created this alone, too! Keep up the good work, and I hope to see more amazing games from you in the future!