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Excession Tool and Uploading ModsHalo: The Master Chief Collection Creator Documentation
Learn how to mod Halo: The Master Chief Collection.
Tutorial
Halo 3 Content Creation Quick StartReference
Halo 3 Mod Tools OverviewReference
Known Tool IssuesLearn how to create mods for various Halo titles.
Excession Tool
Learn how to create Steam Mods.
Where to obtain the mod tools.