Design the paths and then watch the marbles roll through flippers, around and down funnels, across castle ramparts, spiral ramps, and land in catch-all hoppers. This large marble run set includes both Build & Play Marble Run (MTC-966) 68 rearrangeable, durable plastic components & 12 marbles, and the Marble Run Accessories Set (MTC-933) has 34 components & 6 marbles.