Nintendo 3DS includes two screens. The bottom touch screen makes use of a telescoping stylus that is stored in the unit itself. The top screen displays 3D visuals to the naked eye. The system also has a 3D Depth Slider that lets players select the level of 3D they enjoy the most. The 3D effect can be ratcheted up to the highest level, scaled back to a more moderate setting or even turned off completely. In addition to the familiar + Control Pad and button controls found on previous Nintendo hand-helds, Nintendo 3DS now also includes a Circle Pad, which provides a full 360 degrees of direction, giving it the freedom and precision needed to play games in 3D worlds. A built-in motion sensor and gyro sensor can react to the motion and tilt of the system, so whether players are twisting their systems side to side or moving them up and down, their motion-compatible Nintendo 3DS games respond instantly. Each Nintendo 3DS system comes pre-loaded with a variety of fun games, applications an