KiwiCo Marble Roller Coaster

Become a thrill engineer and build twisty, turny tabletop roller coasters. Start with a battery-powered Ferris wheel that lifts marbles to the top, then add tracks and towers to make a figure eight or loop-the-loop track. Switch it on and watch the marbles zoom round and round. Ready to build a rad ride of your own? Engineer thrills Build towers and tracks to make marbles roll ‘round and ‘round. Marble-ous motion The Ferris wheel turns the coaster into a loop that never stops. Double the fun Design a loop-the-loop or twisting snake for high-speed marble runs.

Source: https://www.mastermindtoys.com/products/kiwico-marble-roller-coaster