All the fun of SpaceRail now glows in the dark! This intermediate level set features a cascade drop, vertical corkscrews, and consecutive loops to stimulate your mind and challenge your skills. Enjoy this set at any time, day or night! Perfect for physics classrooms, expert Lego builders, and anyone that loves a challenge in thinking and building. This Glow In The Dark Intermediate Level Spacerail 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 Spacerail together.