Refine your GRAVITRAX track and discover new combinations of speed, direction, and gravity. The Building Expansion adds everything you need to create longer runs, greater elevation, and a smoother flow of marbles. Thanks to smart elements like switches, a vortex, and a finish staircase, you get more action and suspense in every ride.

This set is ideal for anyone who wants to get the most out of their starter set. The GRAVITRAX system is modular and easily expandable—plan, build, and experiment with physics in a fun way. With the official app, you can design tracks on your phone or tablet and then bring them to life.

• Box contents: 2 base plates, 1 transparent level, 8 large height tiles, 4 small height tiles, 2 switches, 1 3-in-1 tile, 1 vortex, 1 finish staircase, 4 basic tiles, add-ons: 2 catchers, 1 free fall, 1 splitter, 1 target, instructions.
• Required accessories: requires the GRAVITRAX starter set.
• Benefits: more building options, more dynamic tracks, supports creativity and understanding of gravity principles.