Review on Wooden Roller Coaster Marble Run Puzzle - ROKR 3D Mechanical Model For Self-Crafting, Decoration, And Educational Gifting by Paul Abs

We have 3 of the 4 of these now with the forth on order. The Marble Parkour was our first and it was the easiest to assemble and it worked fine right away. It is great how it chooses between the two paths. The lift coaster was the second one. It is much more difficult to assemble and the lift would not lift high enough to drop off the marble. I had to do three modifications to get it to work. It still is not perfect but it does work now and is fun. The third was the Marble Squad. It went together fairly easily as most of it is the same as the Parkour. One of the supports for a ramp broke when trying to attach the ramp. But I was able to glue it and it holds up fine. This works fine except they have two paths and the marbles never take the second path. It still is fun. We will see how the forth one works as it is similar to the lift coaster.