Ravensburger GraviTrax: 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.

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

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!

Good stuff to expand the set, but pay close attention to the pictures of what is included. A large box and large price provide a relatively small amount of expansion items. If I had it to do again, I would have just bought the biggest set available or two of the basic sets. The expansions don’t seem to be as good a value although some of them provide some unique pieces. Gravitrax should classify which items in a set support continuous runs of a ball track as some require manual resetting to their start positions before they will again transfer a ball. Those features that must be reset should be sold separately.

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!!!!!

Makes the marble maze even more fun

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