iOS iPhone Utilities
Play games on your OSX machine using your iOS device as a gamepad! gamepod lets you use your iOS device as a gamepad for your Mac OSX (10.6 or newer) games!
Download and install the gamepod server app on your desktop, connect the iOS device to the server app by typing in the host address, and play away! It works with many games for the OSX 10.6. The app uses WiFi, so no need for cables and wires; it is very easy to set up.