KiwiCo Marble Roller Coaster

[This review was collected as part of a promotion.] This does have very SMALL marble’s, watch smaller children. This was so fun to get together for my boys though! Even my husband got in the floor to build it different ways. If it’s not on a flat HARD surface the floor base does come apart. But otherwise this stayed together great! I loved doing this!

[This review was collected as part of a promotion.] This set is definitely more advanced than my 4-year-old could do on his own, but it was such a fun project to build together. He was amazed that we could make our own roller coaster and Ferris wheel and loves turning it on to watch the marbles go. The instructions were easy to follow, though the loop section doesn’t stay down perfectly, so sometimes the marbles get stuck. Still, it’s very playable and exciting. We can’t wait to try the second coaster build!

[This review was collected as part of a promotion.] [I received this product in exchange for my honest review.] The Marble Roller Coaster was an exceptional activity to do with my son. It offers detailed instructions with pictures, making the already easy assembly, that much simpler. it’s safe to do and a wonderful learning tool. the recommended age is 7+, however my 3 year old loved this activity. The durability for each piece is nice, however we struggled to move it to a different room, but we managed. not sure if there’s an easy way to take apart and build the alternative paths or for tidying up when ready to put away. (ours is still out on our living room table lol)

[This review was collected as part of a promotion.] I was genuinely impressed with the KiwiCo Marble Roller Coaster kit from start to finish. Right out of the box, everything was neatly organized, and the instructions were clear, well-illustrated, and easy to follow. The build process was both fun and challenging in just the right balance—it kept me engaged without ever feeling overwhelming. I loved that it encouraged problem-solving and creativity as I figured out how the different parts connected to make the coaster work. As the project came together, I found myself learning a lot about engineering principles—like gravity, momentum, and how angles affect speed—without it ever feeling like a “lesson.” Instead, it was hands-on discovery, which made it so much more enjoyable. The materials themselves are high-quality, sturdy, and well-designed, so once it was assembled, the coaster ran smoothly and reliably. Watching the marbles travel through the twists and turns was incredibly satisfying, and I found myself running it over and over just because it was so fun to see in action. What makes this kit stand out to me is how it blends learning with genuine excitement. It’s not just a one-time build—it’s something you can keep using and even tweaking to test different outcomes. I think it’s a fantastic way to inspire curiosity, encourage patience, and make STEM concepts feel approachable. Whether for kids, teens, or even adults who enjoy hands-on projects, the KiwiCo Marble Roller Coaster is a wonderful experience. I’d absolutely recommend it as both an educational tool and a really fun activity.