Really fun game! I've seen a few puzzle games where the purpose was to get a certain number of pips when you reach the end space, but your game has no end space, which offers the player much more freedom and the level design benefits greatly from your decision. Solving levels is no longer answering the question, "How do the devs want me to do this?" but instead answering the question, "How do I want to do this?"
Devs, you've done an absolutely incredible job. Five stars all around!!