Deep within the heart of a roaring mechanical factory, the gears never stop turning. Steam hisses. Pistons pound. And at the center of it all… And at the center of it all… is you.
The bell rings. The challenge begins.
You’re the operator. The strategist. The one in control of the chaos.
This is your mission—this is the ROKR Gear Ball Challenge 3D Wooden Puzzle (EGC01).
Build. Control. Win.
This isn’t just a puzzle—it’s a full-on marble-run experience with adrenaline baked in. 
With 653 precision-cut pieces and an estimated 5-hour build, this ★★★★☆ challenge lets you craft your own high-speed arena—where every move is yours to control.- Switch tracks. Turn knobs. Time your jumps. Will your marble reach the goal… or fall short?
Conquer a maze of mechanical madness:
- The transparent sky ring track, floating like a sci-fi portal
- A daring jump ramp where every second counts
- The separator wheel, spinning with suspense
- And the grand finale: a crisp copper bell that rewards your perfect run with a satisfying ding
Are your reflexes sharp enough?
Will you play it safe… or go all in for the fastest finish?
Every run is a new challenge.
Every ball is a new chance to master the machine.
Start building now—then show us your proudest run… or your funniest fail!
What’s your personal record? What trick helped you win?
Are you ready to take control?
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