The interactive marble run system from Ravensburger.

With the GraviTrax Obstacle theme set, creativity is unleashed, allowing you to dive directly into the endlessly expandable marble run universe. With over 180 pieces and a variety of building blocks, nothing stands in the way of surprising and action-packed building fun. The example tracks and instructions provide a playful introduction to the GraviTrax universe and encourage creativity in building your own marble run worlds.

GraviTrax is a flexibly expandable, interactive marble run system for children aged 8 and up. With GraviTrax, children, teenagers, and adults can not only build simple marble runs; they create unique marble run worlds. By freely designing the marble runs and exploring the rolling behavior of the balls, understanding of science is sharpened, and gravity can be experienced up close. The GraviTrax universe includes three exciting lines - CORE, PRO, and POWER. All GraviTrax lines and products can be combined in any way. The GraviTrax universe can be infinitely expanded with countless extensions, including classic building elements or stones that enable special actions and tricks. This way, everyone can craft, experiment, and build beyond their limits.