A neat and interesting puzzle game !
I however had an issue with a level : I couldn't go up trough a door even though it was unlocked.
The music however drove me completely crazy : it is not bad at all but its loop is waaaaay to short. A longer loop would make wonders, especially in that game of game where you have to sit and think about the puzzle solution.
Your "setting" button on the main menu is also broken, which is totally understandable for a jam game :)
I loved the fact that you introduced mechanics slowly so you can learn them without having to look at a description or something like it.