The GraviTrax Advent Calendar hides 24 gifts and an extra surprise. Behind each door of the Advent calendar, there is at least one surprise, ranging from building blocks to action stones and festive ornaments. Beginners and GraviTrax fans will especially enjoy 8 special curve stones. The 24 surprises, along with the extra surprise, can be experienced with or without the starter set. A Christmas track and explanations of the individual action stones are included in the app.

With GraviTrax, building fun knows no bounds. The GraviTrax marble run system can be infinitely expanded with extensions, ensuring endless building and play enjoyment. By freely designing the marble runs and exploring the rolling and flying behavior of the marbles, understanding of science is sharpened, and gravity is experienced up close. The STEM label on our products indicates a category of play that makes science enjoyable. STEM (Science, Technology, Engineering, Mathematics) corresponds to the German MINT (Mathematics, Computer Science, Natural Sciences, Technology).