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Quantity
1
Description
Specs
Complexity of assembly: 5 level Assembly time: 9-10 hours Quantity of parts: 773 model kits Materials: High-quality plywood; no glue or cutting required. Model size, l*w*h: 17.13*16*15.63 in (435*408*397 mm) Packing size, l*w*h: 14.37*14.3...
Reviews
4.2
139 ratings
5
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Excellent
C
Cathy · 3 days ago
The instructions are woefully insufficient
H
Herb · June 9, 2026
Received about 2 weeks ago, and didn’t start building due to finishing up the Spiral Marble Run.
Just started the Gravity the end of last week and got basically done with the base
and it’s been a nice build. When starting the marble lift ran into a problem, board #1 was defective with several parts not completely formed. I got to try the 5 step system and it’s fantastic, replacement board is already on the way. Last holiday season I received the Galaxy Marble Run and that’s what started it all.
