Rollin is a quick-thinking puzzle game which requires reflexes as well as astute thinking.The object of the game is simple: maneuver the ball from the start (IN) to the goal (OUT). The ball follows realistic laws of physics, such as the laws of gravity, momentum and the conservation of impulse. Various dangers and problems have to be mastered, e.g. finding keys to unlock doors and paths to the exit. Gold must also be found to buy various objects. Great fun!