I loved the concept of the game, but the ads ruined the experience. There are so many, and some don't even have a X to close it when it's done interrupting the game play. And speaking of game play, the game is too specific as to where you tap when you find a difference. If the item that has changed is large, you basically have to guess where the blue circle may be by tapping along the item, which causes you to have a time penalty for every wrong tap. I really wanted to like this app- I love supernatural, and I like games like this, but sadly, with the unrefined game play and the relentless assault of advertisements, the game is utterly unplayable.