'''The Horus Heresy : Age of Darkness''', sometimes referred to as '''Warhammer 30,000''' or '''30k''', is as a supplement and expansion game to [[Warhammer 40,000]] produced by [[Forge World (Company)|Forge World]], and then [[Games Workshop]] (since 2022) following the merger of Forge World into the [[Specialist GamesDesign Studio]] Design Team.