Give free rein to your imagination with the new Gravitrax system by Ravensburger! Gravitrax is a new way to build the classic marble track, ideal for boys and girls from 8 years old. It is a Stem building game that offers hours of pure fun alone, with friends or with family. GraviTrax is an excellent and educational game, it allows children to learn concepts related to gravity, kinetics and magnetism. While having fun building their own tracks and courses, children can unleash their creativity and ingenuity by inventing new tracks. The new GraviTrax PRO line is an expansion towards a new dimension, which will allow you to reach dizzying heights. GraviTrax PRO Ravensburger Vertical extension 26816 is an extension set for your Gravitrax Starter Set (26832), which will allow you to increase the complexity of your circuits and your fun thanks to gravity. With this set you can overcome previous limits and set new ones! All the new elements are compatible with the whole GraviTrax range.