Ravensburger - GraviTrax - Obstacle Starter Set - 22425 - STEM Construction Toy - Creative Marble Runs - 175 Pieces - for Kids Ages 8 and Up

With the GraviTrax Obstacle theme set, the inventive spirit is unleashed and you can dive straight into the endlessly expandable marble run universe. With over 180 parts 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 for building your own marble run worlds. GraviTrax is a flexibly expandable, interactive marble run system for children aged 8 and over: With GraviTrax, children, teenagers and adults don't just build simple marble runs. They create unique marble run worlds. By freely designing the marble runs and exploring the rolling behavior of the balls, the understanding of science is sharpened and gravity can be experienced at first hand. The GraviTrax universe includes three exciting lines - CORE, PRO and POWER. All GraviTrax lines and products can be freely combined with each other. The GraviTrax universe can be expanded infinitely with countless extensions with classic building elements or bricks that enable special action and tricks. So everyone can tinker, try things out and build beyond themselves.

• GraviTrax is a flexible, expandable, and interactive marble run system for kids ages 8 and up. With GraviTrax, entire marble run worlds can be created. All GraviTrax products from the three lines—GraviTrax, GraviTrax PRO, and GraviTrax POWER—can be combined with each other. An ideal gift for all ages.