Forge World - A: Planet NameSegmentumSectorSub-SectorSystemPopulationStatusAccatranSegmentum UltimaUnknownUnknownAccatran SystemUnknownLoyal to the Imperium.AgripinaaSegmentum ObscurusAgripinaa SectorUnknownAgripinaa System80,000,000Loyal to the ImperiumAlar-MedianSegmentum TempestusUnknownUnknownUnknownUnknownLoyal to the Imperium.Albert IVUnknownUnknownUnknownUnknownUnknownLoyal to the Imperium.AmethalSegmentum ObscurusUnknownUnknownDiamor SystemUnknownThe Forge World of Amethal, a planet that houses a relic from the Dark Age of Technology that keeps innumerable daemons caged beneath its crust, was assaulted by Khârn the Betrayer and his Khorne Berzerkers during the 13th Black Crusade. Once Abaddon's objective -- the cracking of the daemon cage -- was achieved, his forces withdrew. Shortly afterwards, Khârn and his Berzerkers disappeared in a tempest of gore.AnetarbraxusUnknownUnknownUnknownUnknownUnknownA little known Forge World discovered during the Age of Strife. Notable for the development of the Vultarax Pattern Stratos Battle-Automata during the Age of Strife. Later gave the pattern to Mars after their reunification during the Great Crusade. By the time of the Horus Heresy, that pattern was one of the rare testimonies to the Forge World's existence, Anetarbraxus having been reduced to molten slag during the Great Mandragoran Incursion.AntaxSegmentum UltimaVidar SectorUnknownUnknownUnknownInvaded by WAAAGH! Gutstompa, saved by the Blood Angels 2nd Company.AntiocSegmentum ObscurusElaysion SectorPrath Veil Sub-sectorUnknownUnknownCaptured by the Forces of Chaos. Lost to the Imperium.AnuarisSegmentum UltimaUnknownUnknownUnknownUnknownFormerly tied both in tribute and loyalty to distant Accatran as much as Macragge. Loyal to the Imperium.AnvillusSegmentum UltimaUnknownUnknownUnknownUnknownDuring the Horus Heresy, Anvillus was paralysed by civil war, but ultimately, Loyalist elements of the Mechanicum emerged victorious and drove their Heretek brethren off-world or utterly destroyed them. In the present era, this Forge World has become notable for producing Mars-Alpha Pattern Warlord-class Titans. Loyal to the Imperium.Anvilus NineUnknownUnknownUnknownUnknownUnknownNotable for producing Land Raiders during the Great Crusade. Created first Land Raider Proteus. Captured by Dark Mechanicum Tech-priests during Horus Heresy. Ultimate fate is unknown.ArcetriUnknownUnknownUnknownUnknownUnknownConsumed by a tendril of Hive Fleet Harbinger. Presently a Dead World.Arl'yethUnknownUnknownUnknownUnknownUnknownLocated across the border sectors of the Segmentum Tempestus and Segmentum Pacificus were numerous lesser Forge Worlds, which included Arl'yeth. During the Horus Heresy, they sided with the Loyalist cause. It is not known if they were destroyed during the Heresy or during the subsequent campaign against the Traitors, known as the Great Scouring. Fate is unknown.Artemia MajorisSegmentum PacificusUnknownUnknownUnknownUnknownScene of the Hieronymite Heresy. Notable for producing the Artemia Pattern Hellhound Flame Tank. Loyal to the Imperium.Atar-MedianSegmentum PacificusUnknownUnknownUnknownUnknownEstablished by rebellious Tech-priests from the Forge World of Phaeton. Located across the border sectors of the Segmentum Tempestus and Segmentum Pacificus were numerous lesser Forge Worlds, which included Atar-Median. During the Horus Heresy, Atar-Median sided with the Loyalist cause, and has remained a faithful and productive vassal Forge World of the Imperium ever since. Home of the Legio Atarus.