Ravensburger GraviTrax Skytrax XXL Action-Set offers an expansive marble run experience with 237 pieces designed for gravity-defying builds. This STEM-focused kit includes bridge canyons, high-speed slides, and four action elements to create thrilling stunts and epic towers. Compatible with all GraviTrax sets, it encourages open-ended play and engineering skills for ages 8 and up. The set features unique green and grey components that allow for vertical construction and complex track layouts. Brand: Ravensburger Series: GraviTrax Model: Skytrax XXL Piece Count: 237 Age Range: 8+ Years Educational Focus: STEM Action Elements: 4 Theme: Marble Run Material: Plastic Color: Green, Grey, White Compatibility: All GraviTrax Sets Keywords: Construction Toy, Engineering Kit, Physics Game, Building Blocks, Interactive Play, Educational Gift, Logic Puzzle, Creative Thinking, Track System, Gravity Toy, Kids Activities, Science Project, Modular Design, High-Tech Toy