Really fun and innovative puzzle game, I enjoyed it a lot! At first I saw 16 levels and thought "wow this will take hours", but it's nicely fast-paced with game mechanics introduced little by little. I could see this being developed into a bigger game with more levels using those mechanics, as in the jam version it does feel like there could be more levels in between each new mechanic introduction to actually fully exploit its level design potential - but of course it's a jam game and IMO you hit the right balance (as many of us try to test many games and may not want to spend hours on one).
Beside gameplay, you did a good work on the artwork and the music is very fitting. The UI could have some more polish to be clearer, but it's already pretty decent for the scope of a 1-month jam.
Congrats!