GraviTrax Bridges Expansion Set

GraviTrax allows you to design and build your own marble runs and experiment with gravity, magnetism, and kinetics to propel your marble to the finish. With a variety of tiles, levels, tracks and elements, you can control the speed of the marble. WHAT YOU GET: 13 pieces, including adjustable bridges, new extra-long narrow and slow tracks and more. Playing and building with GraviTrax promotes problem solving, creativity and encourages cooperative play with others