I only used it a couple of times after purchasing it. Build your own track system with the GraviTrax Starter-Set! You can design a course full of attractions using a wide variety of construction parts. Furthermore, by using various additional parts, the ways to build and enjoy the GraviTrax track system are endless. - Brand: Ravensburger - Product Name: GraviTrax Starter-Set - Target Age: 8-99 - Number of Components: 100+ - Features: Interactive track system #GraviTraxStarterSet #EducationalToy Thank you for looking.