This is the weirdest game I have ever played. None off the interaction takes place by using the touchscreen. It is a game where you need to solve puzzles by using the many available interaction methods to solve them. For me, this has included adjusting the screen brightness, changing volume, using the camera, location sensors, etc, etc.
The puzzles aren't hard to complete, if you know what to do. There are currently two puzzles that I have no idea how to solve and a couple more where I need to go to places to complete them. It has been challenging and fun over the past few days.
Download it now. You won't regret it.
[Can't remember how I found the game, possibly via a tweet from Casey Liss.]