We keep hearing bleak news when it comes to the App Store; what was once a thriving and exciting revolution is giving way to "me too" apps, poor clones of successful games and a cataclysmic avalanche of "freemium" games based on grabbing as much money out of you or your children as possible through the highly deceptive use of in-app purchases.
But every now and again, something surprises and delights you, and reminds you that games are meant to give players pleasure, not frustration. Monument Valley does exactly that.