YAAAY! There's been a lot of these but this one did pretty well, while I started the levels a bit overwhelmed especially later in the game, but the puzzles were actually quite balanced in difficulty and it was challenging for me but I never really got stuck or frustrated.
Visually, there were moments when the smaller crystals blended in with the background sprites but otherwise it was a cute art style with great cohesiveness.
Only big thing that stood out to me as a dislike was the selection of sound effects. Probably a personal taste thing, but I really didn't like hearing the sounds that play when I scaled up and down.