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? 𝐈𝐧𝐜𝐥𝐮𝐝𝐞𝐬: • wood building set (8pcs), • hardware set (52 pcs), • battery pack with 2 AA batteries, • 6 marbles, • paper guide, • ramp, • 8 tracks, • 8 springs, • wheel cap, • motorized Ferris wheel set (2 pcs), • sticky foam rectangle, • sheet of guardrail stickers, • 5 flags, • 5 flag holders, • illustrated instruction booklet