As you can see, Monument Valley is a beautiful game. It is the only game I’ve ever purchased (best $4 I’ve ever spent). It’s a puzzle game that uses impossible figures. You move your player and parts of the puzzle to get your character from one entrance to another. The story is a puzzle in itself. I hope the addition (which I just bought for $2) will make the narrative clearer.
Usually I just stick to free games when I want to procrastinate, but I think this game is well worth the couple bucks.