The controls are completely unstable, you are required to hold the phone in an uncomfortable position where you can't even see the screen properly, the 'position' indicator picks a completely random spot and gives you virtually no indication if where that is, and worst of all, there are NO instructions whatsoever! The only reason this game is hard is because it is poorly written. And the reason this is poorly written is because it is SAMPLE CODE!! This is frustrating and completely unoriginal. Apple never intended this to be a full-fledged application. It was meant for reference! This does not deserve to be in the top 25 apps. Apple needs to revise the terms of the SDK/App Store. And I know he said exactly what this program was in the app description, this is my rebuttal, more or less.