ROKR Marble Run 3D Wooden Puzzle Roller Coaster Mechanical Model Self Craft Deco Education Gift

Awesome, my brother loved it! He is VERY good with complicated Lego sets and such, so he loved doing this. It took him three evenings to complete. The only reason I docked a star is because he sent me a pic of the size of some of the pieces, and it was literally the size of like a half of my pinky nail. He said there were a lot of pieces like that. But it works great and was still well worth it!

I got this for my 13 yo son for Christmas and he loves it!! It keeps him entertained for hours on end. He is high functioning autistic but is still easy enough for him to follow the directions without help. My only complaint is some of the pieces are hard to remove. When having to push a little harder to pop them out, a couple of the pieces have broke. We were able to glue pieces back together with super glue, so it still ended up working. Just a bit of a hassle. But all in all, it’s been great and I would recommend.

I’m a 65 year old retired engineer and I like building things. I bought this because it looked interesting and I had some time to kill. Put it together over a couple of days and was very impressed. This is very well made with amazing precision in the assembly of the pieces. Some areas are more challenging but with some patience it is a very cool little kit. I think every kid should get one to teach them some basic mechanics and that you you don’t need batteries or USB charging ports to have fun. I will be buying more. Well done.

If you like puzzles and something you can use after, this is great! I would have given it a 4 star but I had so much fun putting it together that I had to give it 5 stars, even though I have had to glue some parts together and use string to make things work right and wouldn't trust it to hold up with kids. It is still very fun to do and put together. The instructions are pretty good, but I just mostly followed without using the video tutorials, which I could never really get up an running.

Unique 3 D puzzle type mechanical device. pieces cut very well and generally fit together well. There were some areas needing glue, but instructions suggested this might be helpful. 4 year old and 6 year old loved it and are treating it carefully while able to play with it. Only area not fitting well is the lift "bar" tolerance is not good , re did out of spec to make work . overall 4.5 rating