Very cool game! Also very hard! It's got a fun and satisfying mechanic, and while the graphics are a bit simple, they do have a certain pleasantness about them. Just need to tone down the difficulty a bit.
I don't think the difficulty is too high. The game just needs some more levels to give the player more time to learn the main mechanics. In fact, I want to go even crazier with the difficulty if we make more level.
