Overall, a great game. I love the esthetic and the art, and generally of the mechanics are well designed and built.
There are two big issues though, and these really hurt the overall quality and enjoyment of what could have been an absolutely amazing adventure game. The first one is the size of the game window: it's too tall. The entire game view couldn't fit in my browser at once, so I had to scroll up and down to access the buttons at the top or something at the bottom; this really broke the immersion and was an irritation. The second issue is obviously already known, and that is the three grid puzzles at the end: they don't fit the stile of the rest of the game, either art or design wise, and the third one seems next to impossible.
I enjoyed the game as a whole, but the two issues mentioned (the first keeping me from fully immersing myself in the game, and the second keeping me from actually finishing the game) prevented me from enjoying it as much as I might have.
Great potential hurt by large failings: 3.5/5