This Advanced Level Space Rail is a build it yourself Marble Rollercoaster. Build your Space Rail with the pre written instructions, or design your own! With endless possibilities and hours of fun, this Marble Rollercoaster will spark the minds of young children and even matured adults. Create fun filled family memories, and build a Space Rail together. Dimensions when fully built: 50" x 12" x 17" BUILD YOUR OWN COASTER: Design a marble rollercoaster! With endless possibilities and hours of fun, this challenge will spark the minds of adults and kids ages 15 and up. YOU DESIGN IT: This ride has high-speed action consisting of multiple paths, loops, stunts and fun; then a battery- powered elevator brings it back again! Let your imagination create the ride! WHO IS IT FOR: People who love brainteasers and challenges will enjoy this mind blowing building toy! Makes a good alternative to board games or jigsaw puzzles for family game night. LET'S PLAY: Mental agility and building games can be a fun stress reliever, and can be a great social activity. Have fun with your children or just feel like a kid again and build your own coaster! SCIENCE TOY: Whether you are a budding brainiac or have a PhD, this STEM toy presents the challenges you crave. Exercise your mind, learn something new, and feel like a kid while you do it!