Once a ball rolls into the bottom, just press the lever to launch it up to the top and back into action! Action & Reaction Lifting System - Toys for Ages 8 to 12 - Fat Brain Toys Toys. Toys..

Can you get all the marbles where they need to go using as few tracks as possible? DropZone - Brainteasers for Ages 8 to 12 - Fat Brain Toys Each challenge shows you where each marble needs to go plus the minimum number of tracks needed to solve the puzzle.Brainteasers..

STEM Toys. Toys..

Party Favors & Party Fun..It's the perfect way to add a splash of color and wonder to your Kullerbu ball-run collection! Kullerbu Colorful Balls Bouncy Ball - Party Favors & Party Fun for Ages 2 to 12 - Fat Brain Toys Toys.

Magnets & Magnetism.

Party Favors & Party Fun.It's the perfect way to add a splash of color and wonder to your Kullerbu ball-run collection! Kullerbu Colorful Balls Bouncy Ball - Party Favors & Party Fun for Babies - Fat Brain Toys Toys..

STEM Toys..Toys. Magnets & Magnetism.

Get it right and this loop will make your marbles defy gravity! GraviTrax - Looping - Toys for Ages 8 to 11 - Fat Brain Toys Toys.. Toys.