Such a sweet little game!
Cleared levels up to 29. There was a steady increase in difficulty.
Music was enchanting. Curious and nocturnal. Very fitting for the ambience of the game.
For the demo you also might want to include a note of when the demo ends so there is no confusion. I was kind of confused when suddenly stage 29 came. No holes in the ice and no puzzle pieces in the air.
Great job here!