The Fling tactile game controller is a real joystick that attaches to your iPad so you can instinctively feel what you're doing with your thumb and increase your accuracy.
Xbox and PlayStation controllers taught console gamers to use a left thumb joystick for movement or aiming. Action games on the iPad simulate that with a virtual joystick controlled with your thumb on the touch screen. Problem is, there's no touch feedback from the iPad's flat glass screen. It's hard to keep track of exactly where your thumb is, making games like GWars:Touch or Rage HD harder than they need to be.