A Marble Run for Braniacs! This gravity powered logic maze is sure to put your visual perception and reasoning skills to the test. The colorful, translucent towers can be arranged in a plethora of visually stimulating structures but, for each challenge, youll have to think carefully to build a path that will successfully carry your marble to its target. 60 challenges, ranging in difficulty, will give you plenty of creative building time while you maneuver the maze in your mind! Ages: 8 to adultPlayers: Single playerFeatures: 1 Game Grid 10 Gravity Maze Towers 3 Marbles 60 Challenges from Beginner to Expert Instructions.