The play test has not occurred, tune in after Christmas for that. Nice set, wrap-able box you might be able to fit most of it in an unmarked smaller box that was in this box.At first, I felt it was limited and is the pricey side. Then thoughtfulness in manufacturing and design seemed to shine. The set fully assembled does take up some room but packs away well. The funnel is huge, none of the balls collide easily on it. When they do, they correct and continue. The "J" ball drop works well, and operates smoothly and is hard to jam. You can incorporate this set with other Rube Goldberg set-ups easily. This can grow with kiddos. You can just set up a portion as well for younger kids to explore cause/effect. The quality of the manufacturing is great and we didn't find issues. My husband loved the lifting column pieces labeled for their height, I wish more parts with a change in elevation would have this on them. I've had an item change on me in the far past. At purchase this was called "HABA Kullerbu Traffic Jam Ball Track 33 Piece Set with Funnel" This is a new product, so it's description may adjust to suit the product over time. The pictures show what I got.
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