DesignNestMagnetCubes Coaster Cubes, Marble Run - 168Pcs, Roller Coaster Building Set, STEM Toys, Ages 8 Years & Up, Advanced Pack

My 9 year old coaster loving kid loves this! My 7 year old has had fun helping him with it too. They have been playing with it for hours.

In general it is an amazing product. Great to teach physics and energy to kids. My frustration was with the magnetic launcher, the marbel provided are not compatible with the magnetic launcher, they are not attracted by the magnet.

This is a winner from an aesthetic perspective - it looks modern and sculptural, unlike the other marble coaster sets out there that generally look either like a kid’s toy or too tech-y to be displayed. That said I was somewhat disappointed that the magnets (which are small circles at the vertices of the cubes) weren’t strong enough to hold the cubes in precise alignment. Each time you run a marble, you need to check every connection. Included clips (to secure cubes together) provide some reinforcement but they’re a bit time consuming to install, don’t provide 100% stability in any case and take away from the simplicity of the concept. But…the kids love it and it looks great on my coffee table so I’m buying more cubes (which you apparently can get in different colors on the Design Nest website).

It was so delicate that it could not be taken apart without breaking. Hopefully they make a more sturdy version because my kids were very upset with this purchase.

The media could not be loaded. Really fun and easy to put together, but sometimes it can be tricky to get the pieces to line up properly.