GBC Module Catalog
The most comprehensive listing of Great Ball Contraption modules
Recently Updated Modules
Classic Space Pinball
Interactive module i´ve been working on for a while. Inline GBC pinball machine that can be operated by the crowd....
Mac Pan
GBC module inspired by the original Pac Man arcade cabinet. Successor to the Monkey Pong module, built in the same form...
Bucket-Chain Portal/Bridge
Large GBC Module to span two tables and create an opening in the GBC circuit. Brigde spans 115 cm (3' 9") and clears...
Trophy Stepper
This is the 2021 Brickslopes Workshop Module. Visit the Rebrickable page to get a download link for the instructions....
Rotor Lift
My very first GBCmodule. Designed in haste three days before goring to Skaerbaek Fan Weekend in 2017. Changed very...
Black Belt
Monkey Pong
GBC module inspired by the old Donkey Kong Arcade Machine by Nintendo. Can be run as a normal inline module or in...
Mini Tipper
This module is the "little brother" of the Cradle Tipper. It was used as a workshop module at the Scandinavian Event...
Penguin Slide
Fun visual GBC module using the old track parts from set 4588 race track.
Ball Bin Module
Cradle Tipper
Simple GBCmodule, very reliable. Probably my most popular module.
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About the Great Ball Catalog
Great Ball Contraptions (GBC) are intricate LEGO machines that transport small balls through creative mechanisms and modules.
This catalog is the world’s most comprehensive resource for GBC modules, featuring hundreds of modules from dozens of builders, a lot of them with build instructions. Whether you’re a seasoned builder or just discovering the hobby, you’ll find hundreds of unique designs to explore and build.
Start browsing to discover the amazing variety and ingenuity of the global GBC community.