I am not sure if my 7 year is old is just lacking creativity but he can never seem to build anything that's a cool enough course (in his words). He tries his own routes and options but never seems to enjoy this more than 5-10 minutes. He followed along to some of the obstacles that were provided to try but he frequently gives up.

Easy to assemble pieces are durable high quality. Highly recommend!

This is such a fun toy. My child's older cousins are able to build this much easier than my younger child can, but they all enjoy it. Keeps them busy for a while.

Very engaging, cognitive and good quality set

Both of our Grandsons love this marble run !! We are purchasing the small marble run for our Granddaughter.

Great fun. Grandchild loved it and grandma and grandpa did too.

My son got this for a birthday present yesterday and we have built the switchback (medium) and marble mayhem (hard) tracks. Both required more than one person to assemble and during assembly the connectors kept coming apart. The end result is not sturdy and both boys can easily knock the completed track/tower over. There are some quality control issues with the connectors. I'm very confused by all the other reviews saying this is a sturdy product.

It was the best purchase for my 6year old! It’s sturdy too!!!

Great fun!

I bought this as a gift for my nephew. The pieces are thick and sturdy, and hold up well to being put together and taken apart time after time. I love how versatile this marble set is, so many possibilities.

We previously had a marble run from another online retailer. That one was always falling down and was frustrating to play with. I decided to try this one from LL, and WOW are we so happy with it! The pieces are sturdy enough to withstand toddlers as well as eager grade school kids. They stay together as they should when built. I love the open ended play this set allows as well.

i got this for my son just befire he turned 3. When we first tried it, it was too complex for him and he just watched me build the marbke run. But as the year went on, it was pretty amazing to watch him get it out again and again and be able to build bigger and more comppex marble runs on his own. This is a great learning and building toy, I would definitely recommend it!!