You don’t necessarily need a controller to play games on your iPhone. But some games are easier to play with those. iOS 7 is going to support third-party controllers. So it is not a surprise to see Logitech working on one. Logitech’s game controller has already been leaked online. It is designed for iPhone 5 and comes with the buttons and everything you would need to play games. This won’t be the last iOS controller we will see this year.