Forge World

This article is about the the class of planets. For other uses of Forge World, see Forge World (disambiguation).

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Image of a Forge World^[11]

Φ-class or Forge Worlds, as classified by the Imperium, are the worlds of the Adeptus Mechanicus—worlds totally devoted to industry and to the Cult Mechanicus's own occult worship.^[11]

Overview

Organisation of a Forge World^[24]

The majority of a Forge World's solid ground surface is covered in thousands of years of built-up, massive industrial complexes: great machine factories, production centres, huge volcanic furnaces, skyscraping chimneys, abyss-like quarries and the great workshop-fortresses of the Collegia Titanica. No other world can match the quality and quantity of a forge world's output.^[1] A Production Grade is assigned to each forge world, being the level of production which it should aspire to reach.^[16]

The Adeptus Mechanicus possesses a monopoly on the advanced technological knowledge of Terra's past; consequently, Forge Worlds are the sole producers of the Imperium's more unique and advanced equipment: high-end personal weapons, spacecraft, war machines such as tanks, fighters, and even Titans, as well as more mundane but vital and advanced equipment.^[1]

Forge Worlds across the galaxy^[15]

The population of a Forge World is invariably immense, the majority directly involved in the industry of the planet, laboriously working in factories and involved in heavy mining. The result of the planet's complete industrialization means its ecosystem has been completely destroyed. The air is saturated with toxic gases and rivers flow with toxic run-off from factories. In many cases, even seas and oceans have been dried up to make room for more factories. However, the output of forge worlds is absolutely vital to the Imperium as a whole.^[16]

An individual Forge World is operated theoretically as its own separate sovereign realm, but one beholden to the authority of the Fabricator-General of Mars and Holy Synod. However it is not unheard of for Forge Worlds to have a high degree of autonomy and power, and sometimes have even gotten away with flouting the dictates of Mars itself. Each Forge World is ruled by its own complex web of Archmagi^[27] and an individual Fabricator-General.^[24]

Forge World^[29]

All Forge Worlds are completely dedicated to the manufacture of the various machines of the Imperium, the pursuit and preservation of humanity's ancient scientific knowledge and the worship of the Machine God. Ancient pacts between the Adeptus Mechanicus and other worlds and institutions of the Imperium oblige the various Forge Worlds to supply other worlds and the various military arms of the Imperium, such as the Imperial Guard. Based on most forge worlds are the Titan Legions; these are supported by legions of Skitarii, the Mechanicus's cybernetically-enhanced soldiers, who also serve as the forge worlds' military forces. Besides these two prestigious forces, there are many other sub factions of a Forge World's armies such as those of the Cybernetica, sworn Knight Houses, Auxilia Myrmidon, Ordo Reductor, Ordinati, Magisterium, Tech-Thralls, war Servitors, etc.^[27] Equipment produced by forge worlds are constructed according to the individual forge world's own design-standards or "patterns".^[16]

Forge worlds are not environments that reward, let alone tolerate, weakness in body or mind. To survive and prosper in a forge world's rigid society, an individual must possess drive, ambition, and good fortune, or at the very least a bloody-minded ruthlessness enough to endure. Rather than being fully indoctrinated to the Imperial Cult, even the lowliest member of a forge world is familiar with the Credo Omniasiah, the Cult Mechanicus. If a forge world native makes their way off-world, they tend to find Imperial society strangely alien, where fools either fear or profane sacred technology and have no understanding of its spiritual mysteries and purity of essence. Nor does Imperial society seem to grasp that men can only prosper by the teachings of the Omnissiah, that survival requires power, and power is knowledge incarnate.^[26]

Types of Forge Worlds^[18]

• Data-Hoard
• Expansionist
• Rad-Saturated
• Reignited
• Slaved Systems

Known Forge Worlds

Planet name	Segmentum	Sector	Subsector	System	Notes
Accatran	Ultima				Homeworld of the Legio Destructor.
Achlys III
Adrosi	Ultima	Gorath Sector		Silurian System
Agripinaa	Obscurus	Agripinaa Sector		Agripinaa System
Albert IV
Alpha Primus	Unknown (just outside of Segmentum Solar)			Quintillus System
Altevfor	Ultima
Ammunheim
Amontep II	Ultima				Contested by Necrons
Angstrom	Ultima			Angstrom System
Antasic IX
Antax	Ultima	Vidar Sector
Antioc	Obscurus		Prath Veil sub-sector		Captured by Chaos forces
Anvillus	Ultima				Known for production of Warlord Battle Titans of Mars-Alpha Pattern
Anvilus Nine					Was captured by renegade Tech-Priests of the Dark Mechanicus during the Horus Heresy. Its later fate is unknown.
Aphret
Appus IV
Arachnus	Tempestus
Arcetri					Now — Dead World
Arenxis Minoris	Tempestus
Arl'yeth	Tempestus	Belt of Iron
Artemia Majoris	Pacificus				Scene of the Hieronymite Heresy
Astaramis	Ultima	Ultima Sector	Ultramar	Konor System
Artos-Rho IV					One of the trio of Forge Worlds (named Deuterium Stars) which during the Great Crusade were the only ones who produced the Las-Impulsors for Imperial Knights before M34. Overrun and destroyed during the Horus Heresy.
Atanix Triumvirae
Atar-Median	Pacificus
Avachrus	Obscurus	Gothic Sector		Gilead System
Barnassus (former)					Now — Dead World
Belacane	Obscurus	Calixis Sector	Markayn Marches	Belacane System
Bellicos					Swallowed whole by the Great Rift.
Bellona	Ultima	Elara's Veil	Annwyn Reaches	Ophion System	Forge moon that orbits Nemeton
Beshic V
Beta Cornix	Tempestus
Bheta-Decima	Tempestus	Nemesys			Crashsite of the Space Hulk Gallowdark
Bronta-Median					Homeworld of the Legio Perennia Titan Legion
Byrrus Alpha
Cadamine					Invaded by the Leviathan splinter fleet known as the Silent Murder during the Third Tyrannic War.
Cadmon's Lock
Cahim II					Invaded by the forces of Chaos sometime after the Great Rift's creation.
Casiorix
Cavor Sarta					Dark Mechanicus Forge World
Chaeroneia
Columnus	Solar
Crucible-Omega	Solar				Dark Mechanicus Forge World
Cyclopea	Obscurus	Calixis Sector	The Periphery		Also — Civilised World
Cyclothrathe	Obscurus	Coronid Deeps			Chaos Forge World
Cypra Mundi	Obscurus				Also Fleet Base
Cyraxus II
Daiamantus
Dantris III	Ultima
Daxxos					Home to the Legio Naesseas.
Deimos	Solar	Sector Solar	Subsector Sol	Sol System	Ancient moon of Mars, now a sub-moon of Titan.
Delphi	Ultima
Delphi IX
Demios Binary	Obscurus	Cadian Sector	Demios Binary System
Diamat	Ultima
Diesos					Dark Mechanicum Forge World
Dominica II
Driantum					Chaos-held Forge World, that was invaded by the forces of the Indomitus Crusade.
Duos	Ultima	Charadon Sector	Phlegyr Sub-Sector	Skhimar System
Dykurnos VI	Obscurus			Dykurnos System
Dynax Primus
Dynax-Abultra
Dynostix V
Ecovoria
Eontar					Subservient to the greater Forge World of Voss Prime.
Ermune	Pacificus	Sabbat Worlds			Occupied by the forces of Chaos by the time of the Sabbat Crusade.
Estaban III	Ultima			Estaban System
Estaban VII	Ultima			Estaban System
Esteban VII	Ultima				Home to the Death Bolts Titan Legion
Eufrates II	Obscurus	Koronus Expanse	The Cauldron	Emperor's Palm System	Governed by the Adeptus Mechanicus Explorator Cognisance Fleet. Lay-visitors are not allowed onto the surface.
Ferrovarum
Forge Polix	Obscurus	Calixis Sector	Screaming Vortex		Dark Mechanicus Forge World
Forge World Thule	Tempestus	Caligari Sector	Atroxia Subsector	Ultima Thule System	The heart of industry of the Caligari Sector.
Fortis Binary	Pacficus	Sabbat Worlds			Chaos Forge World
Fusiria					One of the trio of Forge Worlds (named Deuterium Stars) which during the Great Crusade were the only ones who produced the Las-Impulsors for Imperial Knights. Turned Traitor during the Horus Heresy.
Galatia	Ultima (Eastern Fringe)	Triplex Sector		Triplex
Gamanede					Cadian 113th took the last stand on this planet
Gantz	Ultima	Ultima Sector	Ultramar	Konor System	Forge moon and home to the Legio Praesagius Titan Legion.
Gehn Quora					Once lost to the Imperium, until the Adepta Sororitas brought it salvation in M37. In thanks, the Fabricator General of Mars had the relic Purgator Mirabilis restored for the Sororitas.
Gharani
Ghoulwright
Glasgow IV
Glenescrede Raptus (Destroyed)	Pacificus				Exploded during the Thirteenth Black Crusade.
Glomus				Drinos System	Occupied by Orks.
Goralech					Oribited by an Artificial moon called Pergamatros.
Gorgonum	Ultima
Gorvallon					Subservient to the greater Forge World of Voss Prime.
Goth	Obscurus	Gothic Sector
Graia	Tempestus	Belt of Iron			Homeworld of the Legio Astramana.
Grammachus Beta
Gryphonne IV (former)	Tempestus				Now — Dead World. Devoured by Hive Fleet Leviathan
Gulgorahd	Ultima	Gulgorahd Protectorate
Gylax VI	Ultima			Attila System
Hadd	Obscurus	Calixis Sector	Golgenna Reach	The Lathes
Haddrack	Obscurus	Calixis Sector	Drusus Marches		Also a Death World.
Halfus (former)					Conquered by the Tau Empire's Fal'shia Sep.
Helios
Hellgrace
Hephaesto
Hervara	Obscurus	Calixis Sector	The Periphery
Hesh	Obscurus	Calixis Sector	Golgenna Reach	The Lathes
Het	Obscurus	Calixis Sector	Golgenna Reach	The Lathes
Hexium Minora
Hydra Cordatus	Obscurus			Hydra Cordatus System	Index Expurgatorius
Hydraphur	Pacficus				Also — Fleet Base
Hypnoth (former)	Ultima	Vidar Sector	Ironhame Subsector		Now planet belongs to Sautekh Dynasty
Idumea	Obscurus	Calixis Sector	Hazeroth Abyss
Iktomia					Forge moon under the domain of the Blackshield Legio Tritonis during the Horus Heresy.
Illium					Forge moon.
Incaladion	Ultima				Incriminated in a conspiracy connected to Techno-heretics and worship of proscribed Xenos-lores
Ionus X
Iridial	Ultima	Traxis Sector
Ironfound
Ironghast Foundry					Chaos/Khorne Forge World
Ironhelm
Ixas					Housed the STC for the Las-Impulsor.
Jerulas Station (former)	Tempestus	Belt of Iron			Now a Dead World.
Jupiter	Solar	Sector Solar	Subsector Sol	Sol System	Also a Mining World.
JXM A18Z	Obscurus	Calixis Sector	Malfian Sub-sector
Kai (former)	Obscurus			Kai System	Population butchered by Chaos.
Kalibrax	Tempestus
Kantakkha (former)	Obscurus	Gothic Sector			Occupied by Chaos
Kantos[30]	Pacificus
Kantrael	Obscurus	Cadian Sector			Famous for its Kantrael-pattern Lasguns, used by Cadian Shock Troopers.
Kappa Prime					Homeworld of the Magos Biologis, Daleth Tencin.
Kernak III (former)	Ultima	Octarius Sector	Pankallis Sub-sector	Kernak System	Occupied by Orks
Khania				Khania System	Invaded by Tyranids. Fate unknown.
Kiavahr	Tempestus	Forsarr Sector		Kiavahr System	Controlled by the Raven Guard.
Koden Tertius
Kogen's Toil
Konor	Ultima	Ultima Sector	Ultramar	Konor System	Controlled by the Ultramarines.
Krawbek					Forge moon that is currently being invaded by the Iron Warriors forces of the Warpsmith Brondex.
Krytos					Home to the Legio Krytos Titan Legion.
Lankast	Tempestus				Fate unknown.
Lannar IV	Solar				Fate unknown.
Lashte
Lector's Lowell	Ultima			Eydolim System
Lentrel Prime	Ultima	Vidar Sector			One of the eighteen worlds within the Vidar Sector that contact was lost with in 925.M41.
Lipitou Anville
Lliax
Lucius	Obscurus
M'khand	Pacificus
M'Pandex (former)	Obscurus	Gothic Sector	Cyclops Cluster		Controlled by the Dark Mechanicum.
Magnax					One of the trio of Forge Worlds (named Deuterium Stars) which during the Great Crusade were the only ones who produced the Las-Impulsors for Imperial Knights. Overrun and destroyed during the Horus Heresy
Magnos Omicron	Solar
Mars	Solar	Sector Solar	Subsector Sol	Sol System
Mediant
Megyre (former)	Ultima				Now — Dead World
Melior-Tertia	Ultima
Metalica	Ultima
Mezoa	Obscurus	Gothic Sector	Cyclops sub-sector		Major naval shipyard
Milhand	Pacificus
Moirae (former)					Now - Destroyed
Monsk
Moredakka (former)	Obscurus	Scarus Sector		Thracian Primaris	Now — Ork World
Morod					Consumed by Tyranids, now Dead World.
Morvane					Lost Imperium world
Mpandex	Obscurus	Gothic Sector	Gethsemane sub-sector
Nekkar				Kimmerra System	Formerly held by the Word Bearers
Ninevah					Home of the Legio Invictus Titan Legion.
Noctillus Dhega-Nox
Novios	Ultima	Charadon Sector	Phlegyr Sub-Sector	Kalefaktori System	Part of the Tri-forge Cluster. Contested by Chaos.
Nullivar					Fabled lost Forge World.
Nysairene Delta (former)					Fell to a vast Chaos warhost, which slaughtered the Indomitus Crusade forces sent to defend it.
Ohmn-Mat (former)	Ultima				Destroyed during the Horus Heresy, now Dead World.
Oktos	Ultima	Charadon Sector	Phlegyr Sub-Sector	Kalefaktori System	Part of the Tri-Forge Cluster. Contested by Chaos.
Omegrath
Omnicron 71-DX	Obscurus	Calixis Sector	Adrantis Nebula
Onos	Ultima	Charadon Sector	Phlegyr Sub-Sector	Skhimar System	Part of the Tri-Forge Cluster. Contested by Chaos.
Ophelia VII	Tempestus			Ophelia System	Also — Cardinal World, Shrine World
Opus Ersaticus
Opus Macharius	Obscurus	Calixis Sector	Drusus Marches
Ordana
Ordex-Thaag (former)	Tempestus		Soelich Sub-Sector	Ordex System	Controlled by the Dark Mechanicum.
Orestes	Ultima				Also — Knight World
Palatine III				Palatine System	Also — War World, partly — Ork World
Palomar (former)					Now — Dead World
Parabellus III
Pentos
Perinetus	Obscurus	Calixis Sector	Adrantis Nebula
Phaestos
Phaeton	Solar				Originator of a common Leman Russ pattern
Phaistos
Phoebe	Solar	Sector Solar	Subsector Sol	Sol System	Moon of Saturn, home to a banished Mechanicum sect.[28]
Porphetus (former)					Now — Dead World
Proteus
Proximus
Qartos	Ultima	Charadon Sector	Phlegyr Sub-Sector	Fabrikatus System	Part of the Tri-Forge Cluster. Contested by Chaos.
Qintos	Ultima	Charadon Sector	Phlegyr Sub-Sector	Fabrikatus System	Part of the Tri-Forge Cluster. Contested by Chaos.
Quir					Controlled by the Dark Mechanicum.
Raeddon	Obscurus				Located at the Cadian Gate.
Rangda IX
Retlaxi					Contested.
Rho-Delpha				Mordian System
Ryboth	Obscurus	Calixis Sector	Markayn Marches
Ryza	Ultima		Aurus Subsector	Ryza System
Samech	Ultima			Jericho Reach	Dark Mechanicum Forge World
Sanctus Valorium					Renowned for its las-craft workshops.
Sarcosa-Omikron					Controlled by Dark Mechanicus
Sareme‎					Home to Legio Arconis. It has almost completely fallen to Heresy, in the aftermath of the Great Rift's creation.
Satyraes XII				Satraes System	Home of the Legio Defensor Titan Legion.
Seixios	Ultima	Charadon Sector	Phlegyr Sub-Sector	Fabrikatus System	Part of the Tri-Forge Cluster. Contested by Chaos.
Septios	Ultima	Charadon Sector	Phlegyr Sub-Sector	Kalefaktori System	Part of the Tri-Forge Cluster. Contested by Chaos.
Shaehol
Shallethrax
Shenlong (former)	Ultima				Now — Dead World
Shern	Obscurus		Nachmund Sub-Sector
Shevilar
Sidon 452					Built the starship Star of Venam
Sigma-Ulstari	Ultima	Octarius Sector		Sigma-Ulstari System	Also the only Warden Planet that lies within the Cordon Impenetra, which borders the Ork Empire of Octarius.
Silent Forge					Dark Mechanicus Forge World
Skorgulian	Obscurus	Calixis Sector	Adrantis Subsector
Solemnium (former)					Former Imperium Forge World
Staban VII
Straxos
Stryken Primus	Obscurus			Stryken System
Stygia XII
Stygies VIII	Ultima/Obscurus			Vulcanis system	Produces Leman Russ Vanquishers
Synford	Obscurus	Calixis Sector	Hazeroth Abyss
Synford II	Obscurus	Calixis Sector	Malfian Sub-sector
Taslan's Forge
Telemachus
Telerac
Temaxia	Tempestus	Uhulis Sector
Tephusa Binary	Obscurus
Thagria
Thrax (former)					Now — Dead World
Thrios	Ultima	Charadon Sector	Phlegyr Sub-Sector	Skhimar System	Part of the Tri-Forge Cluster. Contested by Chaos.
Thule	Ultima	Triplex Sector		Triplex
Tigrus	Ultima				Former Ork World, now reclaimed.
Titanslair	Pacificus	Macharian Sector			Homeworld of Legio Machaera.
Toil					Former Imperium, now — Chaos Forge World and Dead World
Tolkan	Tempestus
Tolkhan	Tempestus	Khaldun Sector		Tolkhan System	Home to the Titan Legion Legio Pallidus Mor. It is also the Sector Capital of the Khaldun Sector and a vassal world of the Gryphonnen Octad as well.
Tophet VI				Tophet System	Invaded by the Iron Warriors.
Transix Seven					Homeworld of Inquisitor Kessel's Acolyte Logan Storm.
Triplex Phall	Ultima	Triplex Sector		Triplex	Home of the Legio Victorum.
Trisolian A-4	Solar			Trisolian System	Fate unknown.
Turanshush	Obscurus	Calixis Sector	Markayn Marches
Tydeus	Ultima	Demeter Sector		Hamartia System
Tymatros Aleph					Occupied by Necrons.
Ulan Huda	Ultima (originally)				Controlled by the Dark Mechanicum, said to now lurk somewhere in the darkness beyond the galactic rim.
Unverrdt IX	Ultima				Has close ties to the Blood Angels Chapter.
Uraniborg 1572					Chaos Forge World
Urdesh	Pacificus				Principal supplier to the Sabbat Crusade.
Vanaheim	Solar
Vantius (former)					Overrun by an assault by Dark Eldar Mandrakes, but not before a handful of its secrets had been preserved by the Raven Guard. This includes the creation of Silentus Pistols.
Vastum-01 (former)					Abandoned by the Mechanicus after being stripped of resources.
Vaznagrod
Vellung	Solar				Homeworld of the Cyclopeans Titan Legion.
Venatoria					In 743.M40, Tech-Priests of the world created the infamous Reality Cage.
Verica VII					Home to the Collegia Titanica Legio Sirius.
Vindalex	Obscurus	Gothic Sector
Voss	Solar
Voss Prime	Solar				Known as the Right Hand of Mars. Homeworld of the Legio Invigilata.
Weldcog					Forge Moon, that is controlled by the Pistonhand's Daemoniforge World Eaters Warband.
Xana	Pacificus	Vicidax Thule Sector		Xana-Vicidex System	One of the first Hell Forges.
Xana II	Obscurus	Eye of Terror			Controlled by the Dark Mechanicum.
Zeran
Zhao-Arkkad	Tempestus			Zhao System
Zopyrus VI
Zosma	Obscurus
Zpandex	Obscurus	Gothic Sector	Gethsemane sub-sector

See also

• Extremis Sentinel Protocol
• Forge World Variants
• Industrial World

Sources

This article contains text passages or images with citation issues. The concerned content is marked with "Citation issue" tags. Please help to improve this article by fixing those issues as described in the corresponding Help article. Do also note that it is absolutely forbidden to add new information or content to these marked passages as long as the pre-existing citation issues have not been completely resolved.

• 1: White Dwarf 140 (UK), pgs. 60-61
• 2: Dark Heresy Rulebook, pgs. 287–288
• 3: Black Industries' Calixis Sector (saved archive page, dated 17 February 2008, last accessed 9 July 2024)
• 4: Titanicus (Novel),^[Help] pg. 9
• 5: First and Only (Novel), Part Two, Section Four
• 6: Codex: Eye of Terror (3rd Edition), pg. 25
• 7: Imperial Armour Volume Seven - The Siege of Vraks - Part Three, pg. 119
• 8: Grey Knights (Novel),^[Help] pg. 32
• 9: A Thousand Sons (Novel), Chapter Sixteen.
• 10: Soul Drinker (Novel), Chapter Three
• 11: Warhammer 40,000 3rd Edition Rulebook, pg. 115
• 12: The Harrowing (Short Story)
• 13: Codex: Imperial Knights (8th Edition), pg. 66
• 14: War Zone Damocles: Mont'ka, pg. 167
• 15: Codex: Adeptus Mechanicus (8th Edition), pgs. 12–13
• 16: Imperial Armour Volume One - Imperial Guard and Imperial Navy ^[Help]
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• 19: Hunting Ground (Short Story)
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• 22: The Horus Heresy Book Three - Extermination, pg. 133
• 23: The Horus Heresy Book Four - Conquest, pg. 76
• 24: Codex: Skitarii (7th Edition), pg. 13-20
• 25: Warhammer-Community: What Happened to Bheta-Decima in the Latest Season of Kill Team? (posted 30 May 2024) (archived from the original 10 January 2025, last accessed 10 January 2025)
• 26: Rogue Trader Core Rulebook, pgs. 19 & 20
• 27: Liber Mechanicum (3rd Edition), pgs. 10-11
• 28: Journal Tactica: The Forges of Saturn, pg. 3
• 29: Wrath & Glory Threat Assessment: Xenos, pg. 20
• 30: Warhammer Monthly 17 — Ragnor's Rock