Forge World

"You were born in the shadow of the Omnissiah and all your life you have been surrounded with the great wonders and dire terrors of the Machine God’s arts. Ever since you were born you have been weighed, measured, codified and tested so that your masters might find your place in the great pattern; an unforgiving process that has fitted you well for survival and supremacy."

— Explorator Archmagos Thule, address prior to the Helstrom Pursuit.

A Forge World

The Cog Mechanicum of the Adeptus Mechanicus

Departmento Cartigraphicae galaxy map depicting the bastions of the Machine God

A Forge World is the Imperial term for the numerous planets that are directly controlled by the Adeptus Mechanicus. All have in common a complete dedication to the manufacture of the various machines and devices of the Imperium, the pursuit of and preservation of (ancient) scientific and technical knowledge and the worship of the Machine God. Because of the Adeptus Mechanicus' monopoly on technical knowledge and expertise in Imperial culture, the Forge Worlds are the Imperium's primary source of all kinds of hardware: from farming equipment to war machines such as starships, tanks, aerospace fighters, or even Titans. Ancient pacts between the Adeptus Mechanicus and other worlds and institutions of the Imperium oblige the various Forge Worlds to supply other planets and the various military arms of the Imperium such as the Imperial Guard with the products of their manufactoria.

Much of a Forge World is like an immense factory, with industrial complexes soaring into the sky and mine workings burrowing deep into the planetary crust. Forge Worlds build great numbers of complex technologies, like tanks or spacecraft parts for the Imperial Guard and the Imperial Navy. They are ruled by the Adeptus Mechanicus, whose training and research facilities are located there, along with the grand cathedrals to their deity, the Omnissiah, in which the ruling Archmagi of the Tech-priests enact the grandest, most complex rituals to honor the Machine God. The Adeptus Mechanicus’ fleets, its armies of cybernetically-enhanced Tech-Guard warriors and, most formidably of all, the Titan Legions, are also all based on Forge Worlds. The Forge Worlds are largely autonomous from the rest of the Imperium, as allowed by the terms of the Treaty of Mars that founded the Imperium in the 30th Millennium, and the Adeptus Mechanicus is loath to allow anyone on their surface other than Tech-priests and the legions of menial, cybernetic Servitors who labour for them.

The surface of a Forge World is normally completely covered in massive factory complexes that stretch across the horizon. Its ecosystem has been completely destroyed. The air is saturated with toxic gases and rivers flow with toxic runoff from the multitude of manufactoria. In many cases, even seas and oceans have been purposefully evaporated to make room for more manufactoria. However, the sheer amount of industrial output greatly benefits the Imperium as a whole. All of the items produced by a Forge World are constructed according to a very specific design formula that varies from Forge World to Forge World, even for otherwise identical pieces of the same equipment and these variant designs are known as that Forge World's "pattern."

The Forge Worlds were settled by Cult Mechanicus colonists sent from Mars, the first of the Forge Worlds, during the Age of Strife. Despite the difficulties with Warp travel during that period as massive Warp Storms consumed the galaxy during the gestation of the Chaos God Slaanesh in the Immaterium, several interstellar expeditions were able to make their way across the galaxy, either using the Warp during a period when there were few storms or travelling at sub-light speeds in realspace. Hundreds of Mechanicus colonies were settled across the galaxy spreading their faith into every corner of human-settled space. These planets were allowed to remain under the direct sovereignty of the Mechanicus under the terms of the Treaty of Mars that the Emperor of Mankind signed with the Mechanicus to unite Terra and Mars beneath the aegis of the Imperium of Man in the late 30th Millennium.

The interior of a Forge World

While there are hundreds of Forge Worlds in the Imperium, the most important is Mars, home of the Adeptus Mechanicus' political and spiritual head, the Fabricator-General of Mars; and the Imperium's first Forge World. Other Forge Worlds include Ryza, known for its advanced plasma technology; Gryphonne IV, home of the Titan Legio Gryphonnicus; Agripinaa, a primary supplier of military goods to the Fortress World of Cadia; Phaeton, manufacturer of the Leman Russ main battle tank; and Urdesh, the primary Forge World within the Sabbat Worlds Sector. Of all the Forge Worlds only Trebor caters exclusively to the industrial needs of Cadia. One of the most sought-after creations from Trebor is its version of the Vanquisher Cannon, which is the most powerful of all the Vanquisher Cannon variants. During the Dark Age of Technology, the twin empires of Terra and Mars co-existed, to the mutual benefit of both. Trebor was colonized from survivors of colony expeditions from both Terra and Mars after they were lost during a Warp storm. This forced both colonies to combine their knowledge and build the most technologically-advanced of all the Forge Worlds. Trebor was only re-discovered by Commissar Yarrick during the Second War for Armageddon in the late 41st Millennium. As a result Trebor has sworn its allegiance only to Commissar Yarrick and to Cadia, and its arms and technology made a major difference in the successful defence of Cadia during the 13th Black Crusade.

Life in the Shadow of the Omnissiah

Life on a Forge World is harsh even by Imperial standards. The Adeptus Mechanicus grade, quantify and measure every child born in their domain to best find their use and how they might serve within the Omnissiah’s great pattern. The most promising are inducted into the ministries of the Machine God, destined, in time, to find their place among the ranks of the priesthood. Of the rest, a percentage of the most physically able are subjected to the trials of the Skitarii and other more secretive castes. For the majority, however, there is a place, willing or not, within the Forge World’s vast webs of production. Such life-long service forms the mass of skilled workers that maintain the Forge World’s industries. These menials (or labour units as they are known) are free to make what lives they can for themselves in conditions largely no different from those found on most Hive Worlds, that is so long as work quotas are met, order maintained and their masters’ arcane pursuits are not disturbed. For those that fail in their service, fall badly injured or are proven guilty of some crime, punishment is harsh as new labour-helots and organic servitor components are always in demand.

Notable Forge Worlds

Planet Name	Segmentum	Sector	Sub-Sector	System	Population
Accatran	Segmentum Ultima	Unknown	Unknown	Accatran System	Unknown
Agripinaa	Segmentum Obscurus	Agripinaa Sector	Unknown	Agripinaa System	80,000,000
Albert IV	Unknown	Unknown	Unknown	Unknown	Unknown
Antax	Segmentum Ultima	Vidar Sector	Unknown	Unknown	Unknown
Antioc	Segmentum Obscurus	Unknown	Prath Veil Sub-sector	Unknown	Unknown
Anvilus 9	Unknown	Unknown	Unknown	Unknown	Unknown
Artemia Majoris	Segmentum Pacificus	Unknown	Unknown	Unknown	Unknown
Atar-Median	Segmentum Pacificus	Unknown	Unknown	Unknown	Unknown
Belacane	Segmentum Obscurus	Calixis Sector	Markayn Marches	Belacane System	2,700,000,000
Chaeroneia	Unknown	Unknown	Unknown	Unknown	Unknown
Columnus	Segmentum Solar	Unknown	Unknown	Unknown	Unknown
Constanix II	Unknown	Unknown	Unknown	Unknown	Unknown
Cyclopea	Segmentum Obscurus	Calixis Sector	The Periphery	Unknown	Unknown
Cyraxus II	Unknown	Unknown	Unknown	Unknown	Unknown
Dantris III	Segmentum Ultima	Unknown	Unknown	Unknown	Unknown
Deimos	Segmentum Solar	Sector Solar	Sub-sector Sol	Sol System	Unknown
Dominica II	Unknown	Unknown	Unknown	Unknown	Unknown
Estaban III	Segmentum Ultima	Unknown	Unknown	Estaban System	Unknown
Estaban VII	Segmentum Ultima	Unknown	Unknown	Estaban System	Unknown
Fecundia	Segmentum Ultima	Lithesh Sector	Damocles Gulf	Unknown	20,000,000,000
Fortis Binary	Segmentum Pacificus	Sabbat Worlds	Unknown	Unknown	Unknown
Galatia	Unknown	Unknown	Unknown	Unknown	Unknown
Gorgonum	Unknown	Unknown	Unknown	Unknown	Unknown
Goth	Segmentum Obscurus	Unknown	Unknown	Unknown	Unknown
Graia	Segmentum Tempestus	Unknown	Unknown	Unknown	Unknown
Gryphonne IV	Segmentum Tempestus	Alduin Sector	Unknown	Talos System	8,520,000,000/0
Hadd	Segmentum Obscurus	Calixis Sector	Golgenna Reach	The Lathes	Unknown
Helios	Unknown	Unknown	Unknown	Unknown	Unknown
Hesh	Segmentum Obscurus	Calixis Sector	Golgenna Reach	The Lathes	Unknown
Het	Segmentum Obscurus	Calixis Sector	Golgenna Reach	The Lathes	Unknown
Hexium Minora	Unknown	Unknown	Unknown	Unknown	Unknown
Hypnoth	Unknown	Unknown	Unknown	Unknown	Unknown
Idumea	Segmentum Obscurus	Calixis Sector	Hazeroth Abyss	Unknown	Unknown
Incaladion	Segmentum Ultima	Unknown	Unknown	Incaladion System	Unknown
Ironghast Foundry	Unknown	Unknown	Unknown	Unknown	Unknown
Jerulas	Unknown	Unknown	Unknown	Unknown	Unknown
Jupiter	Segmentum Solar	Sector Solar	Sub-sector Sol	Sol System	Unknown
JXM A18Z	Segmentum Obscurus	Calixis Sector	Malfian	Unknown	Unknown
Kai	Segmentum Obscurus	Unknown	Unknown	Kai System	Unknown
Koden Tertius	Unknown	Unknown	Unknown	Unknown	Unknown
Lucius	Segmentum Obscurus	Unknown	Unknown	Unknown	Unknown
Magnos Omicron	Unknown	Unknown	Unknown	Unknown	Unknown
Mars	Segmentum Solar	Sector Solar	Sub-sector Sol	Sol System	20,000,000,000
Metalica	Segmentum Ultima	Unknown	Unknown	Unknown	Unknown
Mezoa	Segmentum Obscurus	Gothic Sector	Cyclops Sub-sector	Unknown	Unknown
Millhand	Segmentum Pacificus	Unknown	Unknown	Unknown	Unknown
M'khand	Segmentum Pacificus	Unknown	Unknown	Unknown	Unknown
Mordax (Moredakka)	Segmentum Obscurus	Scarus Sector	Unknown	Unknown	Unknown
Moirae	Unknown	Unknown	Unknown	Unknown	Unknown
M'Pandex	Segmentum Obscurus	Gothic Sector	Gethsemane Sub-sector	Unknown	Unknown
Omnicron 71-DX	Segmentum Obscurus	Calixis Sector	Adrantis Nebula	Unknown	Unknown
Opus Macharius	Segmentum Obscurus	Calixis Sector	Drusus Marches	Unknown	Unknown
Ordana	Unknown	Unknown	Unknown	Unknown	Unknown
Orestes	Segmentum Pacificus	Unknown	Unknown	Unknown	Unknown
Perinetus	Segmentum Obscurus	Calixis Sector	Adrantis Nebula	Unknown	Unknown
Phaeton	Segmentum Solar	Unknown	Unknown	Unknown	Unknown
Proximus	Unknown	Unknown	Unknown	Unknown	Unknown
Rhodin IV	Segmentum Obscurus	Askellon Sector	Unknown	Unknown	Unknown
Ryboth	Segmentum Obscurus	Calixis Sector	Markayn Marches	Unknown	Unknown
Ryza	Segmentum Ultima	Unknown	Unknown	Ryza System	Unknown
Shenlong	Unknown	Unknown	Unknown	Shenlong System	Unknown
Skorgulian	Segmentum Obscurus	Calixis Sector	Adrantis Nebula	Unknown	Unknown
Stygies VIII	Segmentum Pacificus	Unknown	Unknown	Vulcanis System	Unknown
Synford	Segmentum Obscurus	Calixis Sector	Hazeroth Abyss	Unknown	Unknown
Synford II	Segmentum Obscurus	Calixis Sector	Malfian	Unknown	Unknown
Tancredi	Unknown	Unknown	Unknown	Unknown	Unknown
Tigrus	Segmentum Ultima	Unknown	Unknown	Unknown	Unknown
Toil	Unknown	Unknown	Unknown	Unknown	Unknown
Tolkhan	Segmentum Tempestus	Unknown	Unknown	Unknown	Unknown
Triplex Phall	Segmentum Ultima	Unknown	Unknown	Unknown	Unknown
Turanshush	Segmentum Obscurus	Calixis Sector	Markayn Marches	Unknown	Unknown
Ur-haven	Unknown	Unknown	Unknown	Unknown	Unknown
Urdesh	Segmentum Pacificus	Unknown	Unknown	Unknown	Unknown
Vanaheim	Unknown	Unknown	Unknown	Unknown	Unknown
Voss	Segmentum Solar	Unknown	Unknown	Unknown	Unknown
Voss Prime	Segmentum Solar	Unknown	Unknown	Unknown	Unknown
Zhao-Arkkad	Segmentum Tempestus	Unknown	Unknown	Unknown	Unknown
Zpandex	Segmentum Obscurus	Gothic Sector	Gethsemane Sub-sector	Unknown	Unknown

Sources

• Adeptus Titanicus (Rulebook), pg. 43
• Black Industries' "Guide to the Calixis Sector", pp. 24, 42
• Clan Raukaan - A Codex: Space Marines Supplement, pp. 35-44
• Codex: Khorne Daemonkin (7th Edition), pg. 72
• Codex: Skitarii (7th Edition), pp. 16-18, 22-34
• Dark Heresy: Beta Core Rulebook (2nd Edition) (RPG), pg. 23
• Dark Heresy: Core Rulebook (2nd Edition) (RPG), pg. 35
• Dark Heresy: Core Rulebook (RPG), pp. 18, 88, 136, 249, 324
• Dark Heresy: The Lathe Worlds (RPG)
• Dark Heresy: Inquisitor's Handbook (RPG), pg. 132, 144
• Imperial Armour Volume One - Imperial Guard & Imperial Navy, pp. 8-12
• Imperial Armour Volume Seven - The Siege of Vraks, Part Three, pg. 119
• Imperial Armour Volume Eleven - The Doom of Mymeara, pp. 90-97
• Imperial Armour Apocalypse (2nd Edition), pp. 12-14
• Only War: Core Rulebook (RPG), pg. 149
• The Horus Heresy - Book Two: Massacre, pp. 156-157
• The Horus Heresy - Book Three: Extermination, pp. 19, 106, 154-157, 160-161
• Warhammer 40,000 Rulebook (6th Edition)
• White Dwarf Weekly #63 (Apr 11, 2015), "Battleground: Gorgonum," pp. 27-34
• White Dwarf 140 (UK), "Stellar Fleets, Galactic Civilisation"
• A Thousand Sons (Novel) by Graham McNeill
• Dark Adeptus (Novel) by Ben Counter
• First and Only (Novel) by Dan Abnett
• The Greater Good (Novel) by Sandy Mitchell
• Grey Knights (Novel) by Ben Counter
• Soul Drinker (Novel) by Ben Counter
• Titanicus (Novel) by Dan Abnett
• Fantasy Flight Games - "The Calixis Sector"
• Corax: Soulforge (Novella) by Gav Thorpe