SpaceRails roller coaster is not a regular toy - it’s a unique way to develop critical thinking skills and create new neural paths in your brain that will greatly împrove your understanding of things. Also, it shows you that you can accomplish anything, even the most difficult tasks if you spend enough time and effort on it. SpaceRails are marble roller coaster building sets that are limited only by your imagination. Meant for ages 8 and up, Seaich Spacerails include 9 levels & with each level you have to seriously step up your game. This being a STEM toy indicates that you’ll need to take your time putting it together, but it will certainly pay off! Dynamics of velocity, momentum and gravity? Those are the key factors that you have to think through and figure out. This is not like your typical Lego set with easy-to-assemble pieces that can be put together in an hour. It’s way more challenging. SpaceRails gave a hard time even to NASA engineers. They thought it would be a simple challenge for them in their spare time, but they were wrong. Spacerails will make you activate every cell of your brain and think out of the box. There are multiple sets to choose from, and depending upon which you purchase, your set might include a helix elevator to carry your space marble to the top of the coster, multiple tracks, consecutive loops & multiple curves, spirals and drops. For extra fun, choose the glow-in-the-dark version. Once every piece is put together, the captivating display of physics will keep you occupied for hours on end. Build your own SpaceRail with pre-written instructions, or be creative and create something unique.