Whoa, what a great puzzle game! I beat the whole thing but the last two puzzles really twisted my brain around. An undo button would be nice for some of the later levels since it takes some time to setup part of the solution and one bad move can lock you which can be quite painful. The vibe is nice, but the snare drum in the soundtrack got a bit old -- maybe something more subtle like the percussion in the limbo soundtrack would fit better with the vibe. Great submission overall though, these puzzles were quite fun!