The Unity game engine likes to take things in small steps. First it was adding Linux and Wii U support. Then Windows 8, Windows Phone 8 and BlackBerry 10. Now that most of the major operating systems are covered, it's time to start making minor enhancements to that support. With version 4.2.2, released today, it now supports iOS 7's native game controller API. Apple decided to standardize controllers across iOS, making it easier for developers to build in gamepad support. It was also trivial for the Unity team to plug that API directly into its own standard Unity input API. For more details you can check out the Unity developer blog.