Building & Construction - Marble Runs

Get ready to unleash your inner engineer with the LEGO Gravity Drop! Build a foot-and-a-half tall chipboard tower full of LEGO contraptions. Watch ...

Move over boring marble runs, there's a new kit in town! Witness physics in action with this innovative, flexible system of tracks. Thanks to nano ...

Stack hollow cubes to magically propel stainless steel marbles down a track for a truly mesmerizing experience! Eighteen special tracks grow wider ...

Experience mesmerizing magic in slow-mo with the Trestle Tracks Builder Set! Each set features hollow stacking cubes and perfectly flat tracks with...

Expand yout possibilities! The Building Expansion offers over 25 additional elements to expand your track vertically. You'll increase the action wh...