Japanese media artist Jitsuro Mase might be the first person to bring 3D to the iPhone. i3DG is a playful analog extension to an iPhone, converting its 2D display into a layered 3D view. Using the very old technique of placing a halfsilvered mirror at a 45-degree angle in front of an image, in a novel new context, the project serves as a timely critique of the popular memes of 3D displays and iPhones. As a gadget peripheral, i3DG can support a wide range of different applications, ranging from simple 3D videos and animations to accelerometer based games.