Add an exciting new challenge to your vertical marble-run layouts with the Snake Expansion Pack. Designed to clip onto smooth surfaces with residue-free nano-adhesive pads, this set adds twisting, high-speed curves and a dedicated Snake stunt to extend routes across doors, tiles, windows and shelves. The kit includes two extra tracks, a track turn, eight nano pads and full color instructions so kids can experiment with gravity, velocity and resistance while building taller, more inventive runs without floor-based supports. Durable, eco-conscious track pieces made from renewable materials let young builders fine-tune and reposition components in seconds for endless trial-and-error play — recommended for ages 8+.