Congratulations on your submission! Very creative game. The core game loop is really fun. I also loved the music.
Here are my thoughts on what you could improve:
- Remove the animation when you restart a level. When creating puzzle games you want to allow players to iterate fast and try out different solutions. Having to wait for each level to re-construct itself after a failed attempt kinda breaks the flow of the game.
- Some puzzles could be completed without using all the available tools. If this was intentional, it's fine, otherwise maybe you want to limit the players' options.
- Hitboxes can be a bit confusing which may mislead players towards unfeasible solutions.
- It would be nice to be able to reposition each element we put, without having to restart the level.
- Just make more of it :) I think if you polish this game, more people would like to play it.
Of course these are my personal opinions, so feel free to keep what works for you.