I've just this minute finished it and wasn't impressed with the game. The game is very short and, apart from from one puzzle, very easy, especially if you're used to block puzzles in the likes of Zelda and Pokemon.
I played the game exclusively using off screen play and there seemed to be performance issues. It looked like there were a few framerate dips here and there.
Had the game been a cheaper price I think it would be easier to recommend but there are far better eShop titles out there at the moment, some of which are priced cheaper and offer a better experience.
It's not all bad. The game does a charm to it. Yono looks great, especially in some of the costumes you can buy, and some of the dialogue is quite humorous, as well.
I was looking forward to this after seeing it in the Nindie showcase. It's a shame it didn't turn out as well as I would have liked.