MARBLEMETRO: Every Arrival Turns the Line.

MARBLEMETRO is an original arrival-authored marble subway scheduler. Choose one waiting stable capsule. Its current rail is not a forecast or decorative animation: the production reducer reads the three physical junctions, routes the capsule to one of four stations, and accepts the arrival only when that station matches its printed ticket. A correct passenger then turns the exact Crown, West or East junction printed on that same ticket. Dispatch order is the timetable.