A nice idea for a puzzle game! I have to admit to brute forcing the third puzzle. I did find the player looking at the mouse to be a little odd given that it doesn't really seem to affect how it interacts with the game but perhaps that's because you ran out of time for a proper implementation of it. I liked the idea of the timing aspect to the puzzles and the music was nice in that it gives a nice rhythm to get into the puzzling mindset.