PerspectiveTest app for iPhone and iPad
This App may help iOS developers to understand how Core Animation Layer parameters work together with perspective transformations. It uses animation and a written explanation supported by a drawing.
The App just helps to improve understanding of above topics (Apples documentation is rather brief). Although it may be fun to see the spinning of a plane in 3D space and influence it, this is not a game really.
Source code is available on the support website.