RavensburgerGraviTrax: Bridges Expansion Set | STEM Toy for Kids Ages 8 and Up | Compatible with All GraviTrax Systems | Ranked No.1 Marble Run System in The U.S

This game is extremely fun and truly teaches a child or an adult to understand how Gravity affects the steel ball bearings and how bridges work! It also teaches a child how to follow instructions and ultimately, their own imagination. I’m a senior and my grandson is 11. I recommend purchasing the large starter kit first, then decide on these extensions.

My son loves these! Secretly, so do I. We work together and build the most complicated tracks we can come up with and then race marbles against each other. Great times!

Our 10 year old son loves these additions to his Gravitrax kit. Guaranteed to keep kids busy!

What's a brothers toy? Its a toy that two brothers can share and play with. Started last Christmas. Made some additions this Christmas. When they get tired of playing, they pack it up and put the box on the shelf. Then they decide that it's time to build something so they do. They experiment and fail, problem solve then succeed. Good toy.

My Nephew loves this so much -it's right up there with lego's top toy in his house hold. I bought him the starter kit last year and was requested to buy the expansion kit's for this year. Great learning toy!!!!!

Gave it to my dad as a gift he loved it and played with it for hours

I had couple of false starts putting the bridge sections together, but, once I figured it out, it was a snap.

The bridges easily break and even if it did not, they take to much speed and are not cool enough to make it worth it.