Completed the demo, looks great and plays pretty well. Was a lot harder than I'd expect from the casual game-like art style. Shop UI doesn't seem to be working 100%, balls can occasionally get stuck in walls or fly out of the map, but at least that is somewhat solved by the recall system. There should probably be a warning about "quit game" actually quitting the game, because I ended up losing 2 stages of progress when I wanted to check the map. Maybe add a way to return to the map mid-stage?