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

Expands the set - but we’ll need more!

This has been much fun and educational for our 7 year old granddaughter. Much better than her old marble machine. Gravitrax makes us think about physics and momentum.

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.

Amazing and gives hours of fun. I bought it for my 4 years old nephew although it is for 8 years. He head trouble to follow the instrauctions so he builds from his imagination with the help of adults and loves it. I guess at 8 years old he will enjoy even more.

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.