Feels like a complete game. The visuals, the animations and the audio are perfectly made and come together very nicely.
The puzzles felt cool, but not sure how I feel about the number puzzle. The ones with 5 numbers felt like they were too dependent on luck. It could be that I'm just too stupid, but it seemed like there weren't enough attempts to reliably solve it.
But overall this is by far the most polished game I've reviewed so far. I think it might even have potential for a commercial release.