The Reclaimers Library

"This installation's research facilities are most impressive! Perhaps we'll have time to see them later."

Welcome to The Reclaimers Library (c20), a project which aims to document and centralize the immense tribal knowledge of the Halo modding community. This is an unofficial resource by modders, for modders, covering Halo Custom Edition and the new MCC mod tools for all titles.

Mods are fan-made modifications to a game that change or add content, or implement unofficial bug fixes and new features. Halo has a 20+ year tradition of modding which is still going strong. On c20 we focus on today's best practices and tools.

Everyone makes mods for different reasons, be it rebalancing the sandbox, learning new skills, expanding content, or plain curiosity. Regardless, we hope this resource can help you.

This website is always a work in progress! Please contribute info if you can.

What's new?

March 2024: c20 received a facelift and has new and revised information, mainly for H1:

Getting started

New to modding? Check out the general information section. Each other section in the sidebar will allow you to explore game-specific guides and reference materials.

Featured guides: