About Planet GBC

The #1 resource for LEGO Great Ball Contraption, Automata and MOC building instructions worldwide.

Our Mission

Planet GBC is dedicated to bringing the fascinating world of LEGO mechanical creations to builders of all ages and skill levels. We connect talented designers with passionate builders through high-quality PDF building instructions.

What We Offer

• 290+ GBC Modules — The largest collection of Great Ball Contraption modules online
• 35+ LEGO Automata — Mesmerizing mechanical sculptures
• 44+ LEGO MOC — Unique custom creations from cubes to botanical art
• 109+ PDF Instructions — Professional building instructions available for download
• Step-by-step Guides — Everything you need to get started with GBC

Part of the BRICKSBIZ Family

Planet GBC is part of the BRICKSBIZ ecosystem, alongside Planet-Brick.com — your LEGO price comparison platform.