Marble run night city ROKR

Marble Night City is based on great human engineering. This DIY wooden puzzle combines the beauty of science and machines, involving so many small gadgets. Build the set and crank the handle, watch marbles run crazy down the slopes and twisting turns.

Dimensions: 31.5 x 23.4 x 4.6 cm (12.4″ x 9.2″ x 1.8″)