Discovery #MINDBLOWN 321-Piece Marble Run Construction and Building Kit for Kids

Make any project… It takes a little time and energy put together… You do have to make sure that it’s put tightly together… But it works perfectly. I think any of these reviews here where they explain that it is not working properly. They just didn’t take the time to follow the directions… And push the pieces together firmly. Once it’s put together… It works fall asleep… It just takes time and patience to do so… But if you let your little kids drive the bus when you’re putting it together… It’s a great learning experience for them to construct something… And the final result is great. If it does stop working for whatever reason it’s just because the pieces are loosening up… And you just have to push them back together again… And it works perfectly again. I would highly recommend… This is a good couple of our project… Time will spent with your kids… And something when they’re finished is an enjoyable toy. Highly recommend.

It does not stay together, the rotation wheel is choppy and it is not a fluid motion, which causes the marbles to get stuck. It just is not worth the time it takes to put together.Ours also had 2 pieces that came melted at the edges. Very disappointing birthday present for my 4 year old.If I wouldnt have thrown the box away, I would return it.

Once this is assembled should be no problem. You have a grid to follow. Add this part at 6 C, and so on. Will, post a picture when done.

We received this as a gift and because of missing pieces we were not able to put it together. Our son is 9 and was able to put it together mostly by himself but needed help with some steps. Not sure how it's labeled 6 and up.

It took about 3 hours to build but it was really fun to assemble and it works great!!! You have to actually follow the grid it comes with and pay attention to the directions. I would highly recommend it...

Good quality product made of sturdy plastic.Very disappointed 9year old on birthday when we found out several cog wheels with connectors were missing, therefore not operational.Also, box picture shows red marbles, ours were plain clear glass.Will request replacement parts and see how it goes with customer service.

Saw this on sale at Meijer so I didn't have the opportunity to check the Amazon reviews. Believe what the reviews say. This thing is impossible!I thought it would be fun for my 10-year-old to assemble for her brothers. In the end, I spent over an hour trying and got fed up around step 18. I was only about halfway done! My husband, an actual engineer, took over and it took him another 45 minutes to figure out.The assembled toy is kind of fun. The marbles sometimes fall off or get stuck but it works more or less.The writing on the box that says you could try different configurations is an outright lie. No way is this thing coming apart! The pieces are wedged too tightly to separate and after the hours it took to build we wouldn't take it apart even if we could.Also, ages 6+?!?!?!? I'm 44 and couldn't figure it out!

With three children, my family has owned hundreds and hundreds of toys, including many that needed to be assembled. I am also an engineer. It is not unusual for me to spend a full work week chasing an obsure software bug, and it doesn't normally try my patience. I have a lot of it. Believe me when I tell you that this toy is your worst nightmare. You may think the assembly will be like legos--it is not. There are 26 pages of increasingly obscure instructions, and each step adds 10-40 difficult to identify pieces using a 3D drawing as instructions. Once you begin on this, there is no way out. Your child WILL NOT be able to help you--in fact, they will likely grow bored of watching within 5 minutes. Your spouse will see what you are doing and suddenly decide to wash the dishes, or do whatever less miserable chore can be found. I threw up my hands on page 15 of 26. I have no idea if what I've done so far is correct, and I can't take it anymore. I'm considering bribing my kid with McDonalds to let me give up and throw it away. Please, heed this warning and stay away from this disaster of a toy.