Really cool idea, and executed very well! I loved the dioramas, and would absolutely *love* to see more! Two minor details I'd bring up are that moving the magnets around corners felt a little clunky, and bringing the magnets back to the goal didn't really add anything to the game. If you had to solve some sort of puzzle *after* connecting the magnets, that would make sense, but in it's current system, I think ending the level as soon as the magnets connect with each other.
Really great game, good job!