Marble Genius Marble Run Stunts Booster Set: 30 Pieces Total, 9 Action Pieces Including New Patented Trampoline, Includes Free Online App and Full-Color Instruction Booklet, Made for Ages 5 and Up

This marble genius is well made and sturdy enough to withstand use and abuse. My grandson used this to expand his marble set and have an extensive set-up for a complex movement of several marbles at the same time.

Fun add on to your marble run but the plastic is a little flimsy vs another brand I have purchased.

Love it❤️

I bought this to add on to my older plastic marble run sets, but they take 1/2" marbles or smaller. The smaller marbles fall through the holes in the railroad-style tracks. Additionally, it doesn't fit the stanchions on the older sets. They are skinnier.As far as the set itself, the pieces stick together VERY securely, which is great! The set itself is perfect for an expansion on a set you already have from the same company, im sure, but it doesn't suit my needs, sadly.

Exactly as advertisedOur son loves the addition to his first marble run… worth the money

These are absolute junk.. I got it for my son and it broke the first time we put it together. It is also so hard to put together..

This set required a little more thinking than just putting pieces together, the loops were a great addition for some more visuals on the marble run, and the trampoline is a nice test of trial and error, although this set is for a marble run i would not recommend getting this for a young child, but a more older kid since it does require a little more planning. overall amazing set of pieces and for the price too!