2 in 1 Marble Run kit, 3D Plastic Puzzles for Adults, The Last City and The Future City Two Metal Models DIY Miniature Building Toy Kits, Gift for Women Men (Parallel World MRX01)

Fun to build, instructions were easy to follow, and so cool to watch! Great part quality and excellent value!

Loved them. They were easy to put together and the kids, who are men now, loved doing this together as a family for the holidays. Great fun!

My preteen had a great time building this, but was disappointed when it didn't run. After I checked that all the connections were firm, it ran perfectly! He loves that he can just start it up and watch it run endlessly. Wonderful experience for him - next level modelmsking for him, as he was only used to Legos previously

My brother and I were able to put it together in a few hour. It is easy along as you plan ahead for how you will connect them because there were several possible configurations. Would be fun for older children. I put my side by side and put in the SciFi/Dystopia section of my book shelf like a book nook. I like the last city better than the the future city I felt that you can actually see the marbles path better. The future city may have cool paths but most of them are covered and you can't see them well.

Have not built this yet but have built other ROKR products like the CooCoo Clock, The Dream Gift Factory and I am currently working on the pinball machine. If my past experience with this fantastic quality company is perfect I see no reason to give this project a five star rating. ROKR is simply the best. I have built kits from other company’s like Wooden City and none of them hold a candle to these kits. I bought this one because as a kid I loved building plastic models of the mechanical type such as the Visable V8 Engine and the Wankle Engine. This looks amazing to me just looking at the quality of the parts. Such precision that years ago did not exist with plastic models. I know when the time comes to build this ROKR marble run it will be a great experience I am sure. These kits give you such satisfaction that it’s euphoric. When you see it complete and running there is nothing like it other than rebuilding an engine and seeing it run the first time. Just get it and enjoy the build!

Great build.. love the size.. wanted something small to fit on my desk

The build was pretty easy, and directions were great. It comes with literally every tool you need to build it (screw driver, and angle clippers). It also gives you a pick tool with a magnet on the end so you can get to the marbles. The lighting is fantastic as you can see from the vid. The difficult part was keeping the config right. I did box B (bottom) and D (top), but elevators on the right mean I did format F for the top and D for the bottom. But if you just take the time to read both directions carefully you'll get it. I did miss a piece on the bottom elevator that kept the marbles climbing to the second elevator, but that was easy to figure out and fix. Hope they offer some new ones down the road. wouldn't mind adding two more to it. :)

Bought it and assembled it. Marbles don’t stay on track, don’t always exit in the exit hole and try e instructions are not easy to follow. Pieces seem to be missing from one that doesn’t let the balls roll into the next run. I recommend buying a digmfferent brand