🚚 Free Worldwide Shipping · Delivered in 4–12 days

🎮 Build It. Play It. Challenge Your Friends.
The ROKR Gear Ball Challenge is a real playable marble 
game you build yourself. Self-lifting marble elevator, 
winding ramps, and a victory bell that rings when you 
win. A game and a puzzle in one.

🕹️ Shaped Like a Retro Game Controller
Designed in the iconic shape of a classic game 
controller — this mechanical wooden puzzle is instant 
nostalgia. Display it as art or play it as a game. 
Either way, everyone who sees it will want a turn.

⚙️ Visible Gears. Real Movement. No Batteries.
653 precision laser-cut pieces connect via mortise-and-
tenon joinery — completely glue-free, battery-free. 
Pure mechanical engineering powering real marble action.

🛠️ 5+ Hours of Immersive Building
All tools included. Clear step-by-step manual guides 
you through every piece. Suitable for beginners and 
experienced builders alike.

🏆 Play After You Build
Challenge friends to beat your high score. The marble 
rolls through winding ramps, gears spin, the elevator 
lifts — and the bell rings when you win. Mechanical 
art that's actually fun to play.

🔧 Lifetime Support from Robotime
24/7 customer service · Free replacement parts · 
Multilingual instructions. We've got you covered 
from first piece to final play.

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📦 WHAT'S IN THE BOX
- 653 precision laser-cut wooden pieces
- All tools included
- Self-lifting marble elevator mechanism
- Victory bell
- No glue · No batteries required
- Assembly time: 5+ hours

⚠️ Ages 14+ · Contains small parts
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🎁 Perfect gift for:
Game lovers · Engineers · Puzzle enthusiasts
DIY hobbyists · Teens & Adults
Birthdays · Christmas · Any occasion