Entertaining game, effects, and music. Solid, readable, retro graphics with an attractive palette.
Appreciate the tutorials, they were well designed, but fast twitch precision games can feel a bit like PE to me when trying to teach new mechanics. OTOH I always appreciate new mechanics like the legs here. I'd say the keys really were the best choice. Employs both hands without needing that useless pointing rodent.
Took me ages to figure out what the first key you were pointing at was, I guess that's internationalization proof?