Lovely little toy of a sim. On "Hello, Ball" I dragged both gaps up away from gravity, hit RUN and got a three-star clean run, then on "Big Boy" I got cocky, gave only the inner ring some spin and watched the grower slip through ring 3's gap after 1.0 s. The results card explaining exactly which ball left through which ring at what time is great; it makes failing feel like information instead of punishment. Every bounce turning into a note and the melody strip on the results screen is a really nice touch, and the presentation is clean and readable.