Marble Runs The Construction Site has a variety and selection of marble run systems that would make Rube Goldberg happy! The goal of each is the same: Make a contraption that will bring the balls from the top to the bottom. But every system will get you there in a different way. Haba Ball Tilt Haba's system of hard wood ramps and blocks has the biggest selection of amazing add-on kits. Scalino, imported from Switzerland A simple, classic marble run composed of ramps and blocks with cool accessories like the bell staircase and waterfall. Quadrilla This stacking system of wooden ramps and spirals has lots of gadgets to surprise you at every turn. When you combine sets, you can stack Quadrilla as high as you are tall! Quercetti Marble Runs Quercetti's system of colorful plastic towers and ramps are great for younger builders. Quercetti Skyrail This is the space-age marble run. Plastic tracks are connected and hang in mid-air. The Skyrail Suspension sets allow you to build a long track suspended from a single tower by wires. Cuboro, Imported from Switzerland With Cuboro's system of hard wood cubes, you really have to plan ahead. Since the marble's path can cross over, through or under each cube, this is a real challenge.