Manic Marble Free is a free preview of the first two levels in Manic Marble, a tilting rolling, 3D arcade game in which you guide a fast-moving marble through a narrow, winding path full of ramps and obstacles. The intuitive, motion-based interface will be familiar to fans of similar games, as you tilt your iPhone or
forward or back to accelerate or brake, and then left and right to steer (which also shifts your camera angle correspondingly). You can pause games in progress and recalibrate the accelerometer settings, and beating the "par" time on a level will unlock the following level. Manic Marble Free provides a good introduction to the full game, along with a surprising amount of replay value thanks to the game's time challenge and fun sound effects and graphics.