CGC Video Games is on a quest to document, protect and preserve the legacy of video games. The resources below further this mission by providing the research, analysis and tools needed to take video game collecting to the next level.
Legend of Zelda variants

CGC Video Games Reference Guide

The CGC Video Games Reference Guide is the ultimate source for video game collecting, whether you're new to hobby or an advanced collector, with in-depth info for almost all consoles we grade, including variant types, regional differences, key titles and more!

Sonic the Hedgehog CIB variants

CGC Video Games CIB Guide

The CGC Video Games CIB Guide is a comprehensive guide to “complete in box” (CIB) video game collecting. It provides component blueprints for matching boxes, cartridges, manuals and game-specific inserts, including all known variants.