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The rune representing the Craftworld Aeldari in the Aeldari Lexicon.

A Maiden World, or Lilaethan in the Aeldari Lexicon, is one of the lush paradise worlds originally created through advanced terraforming techniques from lifeless Dead Worlds by the Aeldari before the Fall of their race's ancient interstellar empire in the 30th Millennium.

The creation of these worlds involved seeding formerly barren planets with lifeforms using advanced terraforming technologies, gradually leading to their transformation into lush, life-supporting paradise worlds. The seeding of worlds was part of a program of colonisation which was intended to provide a long-term solution to the ancient Aeldari Empire's need for more living space, and the result was intended only to be seen by much later generations of Aeldari.

In fact, many of these worlds ended up being settled by other sentient races like Humans and Orks, much to the surviving Aeldari's chagrin and anger.


The development of a lifeless planet into a Maiden World was a slow one. Simple bacteria were first introduced to create a stable, oxygenated atmosphere and gradually more complex organisms were added to stabilise the growing eco-systems of the planet. Eventually, in the distant future, the world would be ready to colonise by the Aeldari of that time. Once the process began it was fairly self-sustaining but took thousands of Terran years to complete.

These terraformed worlds are referred to by the Aeldari as Lilaethan after Lileath, the Aeldari Goddess of Dreams. They are often extremely rich in natural resources and safe from any virulent microorganisms because their ecosystems were genetically engineered to resist harmful lifeforms. The Aeldari consider these worlds, even when uninhabited or currently inhabited by another sentient species, as rightfully their own, created by their forefathers for them to settle.

As the ancient star-spanning Aeldari Empire neared its Fall, many groups among the Aeldari denounced their decadent societies, abandoning their homeworlds in a series of migrations called the "Exodus." These Exodites travelled far from their collapsing empire and settled the still-barren Maiden Worlds.

The terraformed worlds survived the Fall of the Aeldari, and continued to develop on their own. In the Age of the Imperium these worlds are now verdant paradises. Inevitably, many have been settled by the colonists of non-Aeldari intelligent races. Although these races may have lived on the Maiden Worlds for thousands of standard years, the descendants of the colonists are considered nothing less than invaders by the Aeldari of the Asuryani Craftworlds.

After the Fall, the Aeldari began to settle the verdant worlds they had created, sometimes finding these planets already inhabited by other sentient races. The "invaders" are given the choice of either leaving peacefully or being exterminated by the military forces of the Craftworlds. Even in cases where the colonists are feral humans or Ork savages with no technological means of leaving the planet, the Aeldari have mercilessly followed through with the threat of extermination.

Notable Maiden Worlds

Planet Name Segmentum Sector Sub-Sector Notes
Alayran Unknown Unknown Unknown In 631.M41 the Farseers of Craftworld Alaitoc foresaw a vicious assault from an Ork WAAAGH! on Alayran, and so, the Craftworld's forces responded rapidly in order to save the soon-to-be besieged Maiden World. With their Rangers too far away to aid them, Alaitoc awakened their Ghost Warriors and hid them in concealed positions across the planet. When the Orks arrive on Alayran, the Ghost Warriors struck, executing precise attacks on the greenskin leaders, which quickly dismantled, drove the remnants from the surface of Alayran.
Asmorylia Unknown Unknown Unknown In 881.M41 Asmorylia was attacked by a Adeptus Mechanicus Explorator force. An Aeldari Farseer present on the world was captured by a Skitarii Kill-team and delivered to the Forge World of Stygies VIII for vivisection.
Daethe Unknown Unknown Unknown Daethe is located in the Nachmund Sector of the Segmentum Obscurus, near to the Nachmund Gauntlet. Not long after Abaddon the Despoiler retreated from Vigilus following the War of Beasts in the Era Indomitus, a Black Legion warband called the Forgeborn under the command of the Warpsmith D'vok launched an assault against Daethe that was contested by the Asuryani Autarch Ghaelyn of Craftworld Saim-Hann.
Davinuus Unknown Unknown Unknown Aeldari from Craftworld Iyanden fought the forces of the Imperium to reclaim this Maiden World. A truce was eventually called, and both sides soon joined forces when Tyranids were found on the planet. The truce ended with the Tyranids' defeat.
Emele Segmentum Pacificus Cabulis System Unknown An Aeldari Maiden world located in the Cabulis System. This world is currently listed as a Forbidden World by the Imperium, as the entire system is currently under attack by WAAAGH! Gragnatz.
Eth-aelas Segmentum Ultima Ybaric Cluster Vidar Sector The forces of Iyanden join with those of Craftworlds Malan'tai and Idharae. Their combined forces destroy the second tendril of the Tyranid Hive Fleet Naga in 860812.M41.
Ethero Unknown Unknown Unknown This Maiden World was attacked by a tendril of Hive Fleet Kraken but saved by allied forces of the Harlequins of the Masque of the Frozen Stars and Craftworld Biel-Tan.
Equinox Segmentum Tempestus Graia System Graia Sector A Maiden World colonised by the Imperium in M38. Formally known as a thriving, lush, civilized planet, it soon degenerated over three millennia into a sodden, crumbling nightmare, due to constant rainfall caused by the Imperium's industrialisation of the planet and the abuse of it's delicate ecosystem.
Hannibal Unknown Unknown Unknown An Aeldari Maiden World later settled by human colonists.
Kiliak Unknown Unknown Unknown In 838.M41, Imperial xenologists begin to plunder the buried artefacts of the Aeldari Maiden World of Kiliak, triggering a devastating response from the nearby Craftworlds of Biel-Tan and Ulthwé. After a confirmed sighting of the Phoenix Lord Jain Zar and over a hundred Howling Banshee disciples, the Imperial interlopers are killed to a man, incinerated, and their ashes scattered to the wind.
Lethidia Segmentum Tempestus Unknown Unknown In 999.M41, Hive Fleet Leviathn assailed the untamed Maiden World of Lethidia. The Haemonculi of Commoragh descended whilst Craftworld Saim-Hann was attempting to rescue the planet's indigenous Aeldari. Through their vile machinations, the Drukhari were able to abduct the entire planet, plucking Lethidia from Realspace, through a trans-dimensional gateway, and directly into the Webway. Lethidia now hangs like a cataracted eye above the Dark City, the planet's outer layers rich not only with Tyranids but also the tortured spirits of those craftworlders and Exodites too slow to escape. The rending of the veil had left a gaping wound in reality, and a large spar of the webway had been opened to the realm of terrors that mankind calls the Warp. Saim-Hann was reeling in the face of a large-scale daemonic invasion that was spilling through the rift, and the tendril of Hive Fleet Leviathan, denied the power of its planetary feast, was being slowly torn apart by the hell-spawned host that appeared within its bio-ships.
Lilae'Fionnadh Segmentum Obscurus Koronus Expanse Calixis Sector An ancient Maiden World lost to a Warp Storm during the Fall of the Aeldari and later colonised after its return to realspace by human settlers who renamed the planet Dread Pearl.
Lilarsus Segmentum Ultima Unknown Eastern Fringe Lilarsus was a Maiden World of the Aeldari. In 876.M39, it was destroyed by the Tau Empire in retaliation for a cruel Aeldari raid on the world of Ke'lshan, an act that was actually perpetrated by the Drukhari Archon Andross Klax. This in turn spurred Aeldari retaliation against the Tau, resulting in the Battle of Ka'mais. Once they realise the duplicity of the Drukhari Archon, the Aeldari of Iyanden disengage, and the Tau extend the hand of friendship. The Council of Iyanden icily ignore the primitives' offer and bend their efforts towards making Klax pay for the unnecessary carnage he has caused.
Mackensee Segmentum Ultima Jericho Reach Unknown Currently contested between the Aeldari of Craftworld Alaitoc and Hive Fleet Dagon.
Rasilena Unknown Unknown Unknown In 777.M34, Craftworld Biel-Tan begins a bloody war to reclaim the Maiden World of Rasilena from the encroaching human. Iyanden, judging that reclaiming Rasilena brings no benefit in the ongoing war against Chaos, refuses to send aid. Biel-Tan emerges bloodied, but victorious. Thereafter, the two Craftworlds soon lose their unity of purpose, each assuming the other to be uncommitted to their alliance.
Stryken Primus, II, IV & V Segmentum Obscurus Unknown Unknown Situated far in the galactic northwest, the Stryken System's principal planet is the smoke-wreathed Forge World of Stryken Primus. The system's industrial heart is protected by a ring of three Knight Worlds in close proximity -- Stryken II, IV and V -- and each is home to several knightly houses. These verdant planets were once Maiden Worlds of the Aeldari. The ancient tribes of Exodites that dwelt there, herding the many different species of giant reptiles and bipedal carnivores, were ruthlessly driven from these worlds by the knightly houses that were established shortly after Mankind's arrival.
Tarsus Unknown Unknown Unknown A Maiden World guarded by Craftworld Ulthwé. After a meeting between Farseer Eldrad Ulthran and the Emperor's Children Primarch Fulgrim go sour, the Daemon-influenced Fulgrim orders the Maiden World and others in the Perdus Region bombed with the deadly life-eater virus.
Torvendis Unknown Unknown Unknown A sentient Maiden World at the very heart of the Warp rift called the Maelstrom. After being tortured and driven insane by the daemonic Chaos minions inhabiting it, it eventually destroyed itself as revenge against the Chaos Gods who had imprisoned it and treasured it for so long.
Twenty-Eight Four Unknown Unknown Unknown An unnamed Aeldari Maiden World brought to Imperial Compliance by the Emperor's Children Legion during the Great Crusade in the Perdus Region.
Unnamed Worlds Unknown Unknown Perdus Region A number of Maiden Worlds in the Perdus Region meet the same fate as the doomed Maiden World of Tarsis, virus-bombed with the deadly life-eater virus by the Daemon-possessed Fulgrim following a meeting with Farseer Eldarad Ulthran that turns sour.


  • Codex: Eldar (6th Edition), pg. 7
  • Codex: Eldar (4th Edition), pg. 7
  • Codex: Imperial Knights (6th Edition), pg. 19
  • Codex: Tau Empire (6th Edition), pg.
  • Codex: Tyranids (5th Edition), pp. 16-17
  • Craftworld Iyanden - A Codex: Eldar Supplement (6th Edition), pp. 56-57
  • Dark Heresy: Creatures Anathema (RPG), pg. 77
  • Dataslate: Eldar Ghost Warriors (7th Edition), "Timeline - An Anticipated Atrocity"
  • Harlequins Painting Guide – Warriors of the Laughing God, pg. 41
  • Haemonculus Coverns - A Codex: Dark Eldar Supplement (6th Edition), pp. 60-68
  • Inquisitor: Conspiracies 3 - Heavenfall
  • Rogue Trader: Lure of the Expanse (RPG), pp. 97-98
  • Warhammer 40,000: Planetstrike, pg. 55
  • Warhammer 40,000: Rites of War (Board Game)
  • Warhammer 40,000: Rulebook (5th Edition), pg. 116
  • White Dwarf Magazine 126 (UK), "Space Marine - Knights," by Andy Chambers, pg. 28
  • Fulgrim (Novel) by Graham McNeill
  • Inquisition War Trilogy (Novel Series):
    • Harlequin
  • Daemon World (Novel) by Ben Counter
  • Warhammer 40,000: Kill-Team - Gamma-Zhul-881 (Specialty Game), pg. 8

Worlds of the Galaxy
General/Environmental Classifications Chem WorldDead WorldDeath WorldDesert WorldDerelict WorldIce WorldForest WorldJungle WorldMountain WorldOcean WorldRad WorldSwamp World
Imperial Classifications Abattoir WorldAdeptus Astartes HomeworldAgri-worldAnchor WorldArboreal WorldArchive WorldArmoury WorldAstropathic Relay StationBattery WorldCardinal WorldCemetery WorldCivilised WorldDelverworldFeral WorldFeudal WorldForbidden WorldForge WorldFortress WorldFrontier WorldHive WorldHub-FortressIndustrial WorldKnight WorldLabyrinth WorldLumber WorldMenagerie WorldMerchant WorldMining WorldPenal WorldPenitent WorldPleasure WorldQurantined WorldQuarry WorldRefugee WorldRepository WorldResearch StationSentinel WorldShrine WorldWar WorldWaste World
Chaos Classifications Daemon WorldHell-ForgeFallen Knight World
Xenos Classifications CraftworldCrone WorldExodite WorldHold WorldKin WorldMaiden WorldOrk WorldT'au SeptSept WorldTomb WorldXenos World