Marble Run, 135pcs Marble Maze Game Construction Building Toys for Kids, Marble Track Race Set STEM Learning Toys Gift for Boys Girls 3 4 5 6 7 8 9 10+

My son absolutely loves these marble runs!!! They are great for kids who love to build and love watching the marbles go down the runs! So fun and great quality!! Customer service is top-notch!! You will love this marble run if you purchase one! ❤️

Although a little unsteady to put together, it provides many options in putting it together, creating potentially hours of fun for toddlers

I purchased the marble run for my son as a Christmas gift. I used to love mine 30+ years ago so I figured he would enjoy something similar, and sure enough, he sure does. He's a little below the recommended age so it's something he requires a little help assembling, but that's perfectly okay -- we expected that.The only real caveat I've noticed is that although the set itself is great, his other marbles are just a little bit too large to fit through it and end up getting stuck. To be honest, I didn't realize marbles came in different sizes -- I figured they were all pretty standard, but they're clearly not. This, however, isn't a huge problem, as the ones included work just fine; we just separated them from the others in his collection to avoid the issue entirely.Overall, a great choice!

My son has spent hours with this. He's able to build different structures with it (with some help, but it's pretty easy to get it in configurations that will run the marbles) and loves putting the marbles through it. Pieces fit together well and seems to be good quality and durable. Highly recommend.

My grandson absolutely loved his marble run although the instructions were not very clear, but we figured it out

My autistic child loved it until he look it apart them that when great grand has to keep putting it back k together again easy assembly sturdy worth the fun he is having

This product is fine - the pieces are sturdy and fit together. But - the marbles and tube/opening size are smaller than other similar sets. I found a marble run at a thrift store and my son LOVED it. Bought this to add/expand the set. He was so excited to open the new pieces and connect them to the thrifted set. But, the old marbles won’t through the new set and the pieces won’t connect. What a disappointment. I would return except that my son is already building the new set. Now we’ll have two separate sets that just don’t fit together. Just very disappointing.

Labeled "for 3 and up.". It took me, an adult with good abilities, at least two hours to assemble. No three, or even six year old could do it. Further, it uses special small marbles which run very fast and consequently briefly through the various runs. It is beautiful to look at when completed , but not a lot of fun.Later addition: customer service is wonderful, and I believe more recent products have addressed at least some of my criticisms.