With GraviTrax The Game Impact, children can experience creative puzzle fun. The game consists of 30 puzzles that must be solved using task cards. At the beginning of the game, the positions of the start and target stones are indicated. How should the track be built so that the ball rolls from the start to the target? It is specified which elements may be used. If the ball reaches the target, the task is solved. In this set, the action stone Hammer is the focus. He and 27 other building blocks challenge children to think critically in The Game Impact. With GraviTrax, building fun knows no bounds. The GraviTrax marble run system can be infinitely expanded with extensions. By freely designing the marble runs and exploring the rolling and flying behavior of the balls, children's understanding of science is sharpened, and gravity is made tangible. The STEM label on GraviTrax 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).