Developers also able to implement gamepad API in older versions of iPhone and iPad OS
Middleware firm Unity has integrated iOS game controller support into its popular development platform.
Included in the latest 4.2.2 update, controller support will plug directly into the standard Unity input API.
As well as being applicable to iOS 7, in which controller support was first implemented, Unity will also run gamepad-based titles on older versions of the operating system for Apple devices.
In line Apple regulations however, developers will not be able to create controller-only titles, as games must also support a standard touch user interface.
You can find more documentation on controller support in Unity 4.2.2 here.
Other updates featured in the latest update to the engine include a number of fixes to graphical issues and iOS compatibilty problems.
Visit the official website for more information.