From Halopedia, the Halo wiki
Retrieved from "https://www.halopedia.org/index.php?title=Game_Master&oldid=1352287"
Game Master is an achievement in Halo: The Master Chief Collection. It is unlocked by saving five custom game types. These game types can be downloaded from a File Share or created from scratch. The achievement is worth 5 Gamerscore. It also unlocks the Gold Forge Nameplate.