I have used the previous generations of BitmoLab’s GAMEBABY case and immediately loved it. If you are into any sort of retro game emulation, you have to check this out. This places the control buttons on the iPhone screen, giving you the feel of real physical buttons when playing your retro games. They come in three versions: GameBaby Color, GameBaby Retro, and the newest GameBaby transparent (which is the one I have been showing off). It is inexpensive, lightweight, simple to set up, and actually improves the experience of playing retro emulated games on an iPhone.