Review on Roller Coasters and Waterslides by Marble Genius by Eric Edgar
Best in combination with other Marble Genius sets
This set is great! When used in combination with other sets and Marble Genius balls (sometimes included in box sets like this one) the problem of marbles falling or getting stuck in the "coaster" sections as mentioned does not occur. multiple users. This has been carefully tested by high school students. They're pretty strong.
- Comfortable
- Definitely a bad product
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