On newest Cardboard viewers, such as the Star Wars viewer, the button pushes a lever that touches the top middle of the touch screen. In this game, theres an ad in the top middle of the touch screen. Therefore, you cant actually play the game, because pushing the button taps the ad, instead of tapping the game. (Im trying with an iPhone 5S with the Star Wars viewer.) To fix it, move the ad to the bottom middle of the touch screen, or allow us to dismiss it, or just show a temporary full-screen ad instead of the persistent banner ad.