Marble Genius Marble Rails Physics Set: 5 Piece Marble Run (Includes 3 Y Splitters and 2 Loops), Compatible With Marble Rails Building Sets, Comes With Online App and Instruction Manual, Ages 8 and Up

WHAT MAKES US DIFFERENT? Download our free Marble Genius app for interactive instructions and building challenges We pack the most action pieces for your dollar into each of our sets + we offer action-filled accessories. With more than 50 marble runs on the market and 5 patents, we offer the most unique and innovative marble run products to keep expanding the fun. All Marble Genius Marble Run sets and Marble Maze games are compatible, giving you endless add-on options.

For STEM kids who love to build: This marble rails physics set contains 5 add-on pieces total, for creating and building unique marble rails Accessories included: Marble Rails Physics Set includes 3 Y Splitters and 2 Plastic Loops Designed for kids: All Marble Genius sets are challenging enough for adults and yet easy for kids to use. Our kid-friendly connectors fit together snugly and provide a stable structure Free app with purchase: Download the Marble Genius instruction application for step-by-step guidance, fun challenges, and regularly updated content. iOS and Android versions Endless options: All Marble Genius products are compatible. Our marble run sets, marble maze games, and accessory sets can all be used together