GraviTrax Volcano Marble Run Expansion Kit, 27619

Upon originally opening this it didn't really work very well - it seemed like the button that the ball had to hit to trigger it was too stiff, meaning that you could push it with your finger but a ball couldn't trigger it.I ended up opening it up (you'll need a small Torx screwdriver for this) and the spring was slightly mispositioned against the button causing the problem. One quick bit of screwing it back together and now it works absolutely as intended - just a shame that some people are experiencing the same problem as me but hopefully everyone can fix it.

Bought this as a present for my Sister's son. He seemed happy. Nothing missing.

I bought the XXl basic box for my 8 year old grandson for Christmas with a couple of extra pieces. He started on a basic level and is able to increase the levels of difficulty himself. He has spent a lot of time experimenting with and loves it. A great product.

The media could not be loaded.  Gravitrax produces hours of fun and this volcano piece is a great addition to the collection. it's a must-have

Didn’t come with the balls

My son loves it!

Good

Great addition to the gravitas set