Absolutely beautiful game - if nothing else for the music and art. Spot the difference is such a frustrating concept but because of the way it is executed here it is a genuine joy to play.
Finding level 16 really tough. It's the one where the connection points are halfway down the cliff, and there's a small ledge which I guess you are supposed to rest your walkway on. Proving really tough!
Nailed 751 - didn't use any hints and it was quite easy. It's amazing how sometimes you get all 5 instantly and other images you really struggle. Nice game, cool music, 4/5.