K'NEX - Marble Coaster Run with Motor‚ 504 Pieces, STEM Building, Kid Construction Set‚ Ages 8+

The print instructions aren't bad by any means, but it was a little challenging to figure out which rod to use where given they're all the same color. There was a small piece of paper tucked in the book that provides a link for troubleshooting. I took a look-it sends you to a video that does a good overview of building the model and making it work well. More importantly, in the video description there's another link for updated web instructions that include extra letters and numbers that really spell out what to use where in each step. I had the instructions up on my laptop and printed out the slip sheet to organize the different rods-worked like a charm! Great build, lots of fun, and a good amount of support material-would definitely recommend to anyone young or old that likes to build or tinker!

I've always been a fan on K'NEX since the 90s and loved the original ball factory. This new marble coaster set really does a good job continuing that legacy of fun, educational building sets. It does have a motor, it's built from all classic K'NEX, and introduces new marble parts and pieces which are super cool and fun! I really hope K'NEX turns this into a line like their micro coasters-would be really cool to collect and combine into a giant marble coaster run or make a marble coaster run amusement park!

Exactly what you would expect. I customized it and rebuilt it to make a ball retrieval system for my binho board.

My son is pretty happy with this. Down falls to this is none of the pieces are labeled or in separate bags, and the manual to build have to be studied in order to attach the right size pieces and in the right locations, and there are a lot of pieces!! This is about a 4-6 hour set up, takes a lot of patience! The age appropriateness I would say is much more advance then an 8 year old level. One of the most difficult I have built out of several!

I got this for my son and couldn't be happier. He plays with it for hours. The different builds are challenging but easy enough for him to do it without any help. He loves all 3 stages. Highly recommend this set.

I will never take for granted the simplicity and elegance of Lego products. Everything about this product, my first knex product, was a disaster. Instruction booklet is awful, filled with confusing and terribly unhelpful pictures, and diagrams. There were five different lengths of the exact same color and shape kind of piece. In the countless different ways that they could have simplified the instruction and indicated some help to the user on how to differentiate which piece was needed, they failed to do so. Upon completion after much frustration, I realized that I was missing a few pieces. It’s possible that it can easily be confused as to which size piece they were looking for, that I may have incorrectly placed an item. But at that point, it didn’t matter. The final product was wobbly, the balls did not fall into the correct placement for many reasons, and it was a total disappointment. Additionally, the way the item is explained, makes it seem like the three different steps that are mentioned are three separate levels that can be independently done. Not so. Level one is just the first set of steps, and does not independently work on its own. I assumed once you completed level one, which would be an easier build, it would work on its own, as just an introduction as to how the whole system would work. Level one is just the first 30 steps. Once you finish level one, you have a product that is 1/3 completed, and that’s it. You then have to complete level two, and then level three, for the item to actually function. As I said, the way, the item description is written, makes it feel as if, you could work your way up to the third level, and that each level was independently a functioning part of this toy. Big disappointments, and the last product I will buy from this company.

This was purchased for my grandson and he is having a blast putting it together and playing with it.

Parts quality seems top notch however, parts are not numbered. There are multiple size white sticks and they only put a picture of the stick required which is confusing most of the time. The picture quality of the instructions is poor making it difficult to determine specific placement of parts. Once completely assembled to the absolute best of our ability following the inadequate instructions, hardly anything lined up correctly and any amount of adjustment attempted ended in release of parts. The chain is constantly catching on the feed ramp, the chutes don’t aligned with the drop ramps, etc etc. Gave 2 stars simply because the parts all fit together well and are good quality. Not a fan. Will not buy again. For this amount of money, I expected a better product. My kid is also very disappointed given it was a gift for him. Do better Kinex.

Bought for my 9 yr old nephew and he loves this. Almost educational too in how it gets him thinking and creating!

Las instrucciones no vienen en español y es difícil de armar, no es una estructura muy sólida y los componentes se atoran

I great set! Hours of fun for the kids!

My grandson used this along with his other sets and had hours of fun.

This product is horrible. I would give this 0 stars if it would let me. I bought it for my son as a present. He is 11 and very talented at building stuff. He built the whole thing but couldn't get it to work so we took the whole thing apart and tried building it together. I thought maybe he had made a mistake along the way. But now I realize he had not. After rebuilding it together, it still doesn't work. The hooks fall off the track everytime they go around. Marbles fall off the rails before reaching the end. My son is hugely disappointed. I feel like we wasted our money. FYI, I have written 1 or maybe 2 reviews on anything in my life. But this toy is so bad I had to write a review.