Extremely clever design and nice music and visuals. It's definitely harder than I'd like but it does a great job of introducing mechanics, so it's more of a personal preference. It's really satisfying to beat a level, but just a tiny bit frustrating by how precise some need to be (I didn't finish it, I got to the one with the Jumping guy and the ball). This use of a 1 button control scheme was REALLY smart though, especially on how the ball mazes flip.