Comes with over 150 pieces, including 30 glow-in-the-dark marbles. Comes with UV light to make marbles glow. Includes a storage bag. Pieces are easy to fit together and take apart.
Some users felt that taller structures felt a bit flimsy.
Comes with over 100 pieces of track and 20 marbles. All parts fit together completely, allowing for thousands of possibilities. Plastic is translucent so that users can see where the marbles are.
The pieces used for the base do not stabilize the tracks very well.
Offers a wide variety of puzzle challenges, forcing users to develop new skills. Instructions come with multiple challenges ranging from easy to hard. Pieces are durable.
Some of the challenges can be a bit hard to understand for younger audiences.
The pieces are made from high-quality wood. Offers different pieces that aren't available in other products. Instructions offer multiple types of runs that are easy for younger users to build.
Not all the pieces are interchangeable, which limits the possibilities.
Includes over 100 pieces. Comes with multiple "trick" pieces to add new and fun elements to various tracks. The grid design challenges users to think outside of the box when creating new layouts.
Some users disliked that you couldn't build upwards as much.
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