It’s GraviTrax built on the wall, with tricks galore, including a new world record for back-to-back loops! Made 100% of genuine … source

Happy new year! This time i show you two GraviTrax Castles, including GraviTrax Pro sets! Thanks for watching, enjoy! source

David made a pretty cool thingie with some of his pieces. This thing spins on inverted tracks and marbles. Pretty cool concept little dude. I like it. source

This was one of our first ones. It was a lot of fun. All three of my kids worked on it. Its a shame how quick they are. We need more pieces. #ravensburger . Does anyone else play with these things? If so where do you get your pieces from? …

This is one of many runs with our family. They are a lot of fun. This one is called the tower of…. *Mumbles*. awesome job though and lots of fun. source