GM Koronus Expanse


Accursed Demesne

Chasmed world (Koronus Expanse map)
Cinderhall (Koronus Expanse map)

Illisk, Unbeholden Reach (Edge of Abyss page 43) or Accursed Demesne (Koronus Expanse map)

This world is worthless—all of its mineral wealth played out by ancient strip mining. Its resident xenos culture died off long ago, the entire ecosystem destroyed by their desperate final efforts.

Marwoly (Koronus Expanse map)
Procession of the Damned (Koronus Expanse map)
It is a blighted void, a few barren worlds circling a bright and turbulent star. Closer in to the solar energies is the Processional: a thin orbiting chain of wreckage, warp-crushed space hulks, and dead vessels of a hundred different xenos origins.
Ultima Tectum



Foulstone, cemetery world

Somnium VIII (Edge of Abyss page 40)

Centred around a bright, blue giant star, the Somnium
system consists of fourteen planets and hundreds of moons.
The planets closest to the star are small, arid balls of rock
baked hard by the intense heat and radiation of their massive
star. The rest are a mix of mostly unremarkable feral worlds
with little or no commercial value or worthless, lifeless rocks.
Aside from its planets, the Somnium system houses little else
of interest.

Cinerus Maleficum

The Breaking yards (Edge of Abyss page 32)

Foundling worlds

Pratus,  (Faith and coin page 63)

Rimward of the Emperor’s Scourge and bathed in its pale iridescence, lies the desolate and mysterious world of Pratus.
The third planet in the Mallister system, ancient Pratus orbits a dying white dwarf star that is little more than a cinder, and shares the system with a collection of barren, lifeless planets, shattered moons, and slowly unravelling gas giants. Resources: Xenos artifacts

Loreatta (Faith and coin page 15)

Biryonox Prime (Faith and coin page 19)

A death world fi lled with hardy, brutal humans and an abundance of climatory threats,

Everharvest (Faith and coin page 20)

Kosdir (Faith and coin page 29)

Gildas (Faith and coin page 30)

Remote supply station orbiting the world

Heathen Stars

Naduesh, (Edge of Abyss page 30)

Naduesh, the lone habitable planet in a small, empty star system, The crumbling remains of ancient hive cities thousands of kilometres across span the entire planet, and fully two-thirds of the land lies in the shadow of their shattered domes. The whole planet is a single landmass punctuated here
and there by deep, broad, freshwater lakes. Resources: Archeotech, human population

Koronus Passage

Port Wander (Into the storm page 234)
The Stations of Passage (edge of Abyss page 25)
The Witch-cursed World (Edge of Abyss page 26)

The Maw

The Hermitage (Edge of Abyss page 29)

Founded in generations past, this void station was once considered to be a bastion of the might of the Imperium. After the annihilation of Trame Lathimon, the station became a home for all manner of drifters and hermits. As time went on, the station slowly became a haven for Rogue Traders gathering together to wait out the nearby storms; and eventually, it became even less.
Today, parts of the Hermitage have crumbled and are open to space. While it is still home to a few hermits, the station is mostly used as a clandestine meeting place for Rogue Traders to broker deals, discuss trade, and meet on neutral ground.

Ragged World’s

Aubray’s Anvil, (Edge of Abyss, page 35)

Long bereft of human habitation and given over completely to beasts and plants, the Anvil more closely resembles an abandoned forge world than a typical hive. The face of the planet is covered with obscure laboratories and sprawling factories hundreds of kilometres long. Its great hives are a twisting maze of steel and stone and unidentifi able composites under crystalline domes thousands of metres high. Resources: Archeotech

Ikeran (Faith and coin page 62)

Nearly the size of Scintilla and covered almost entirely by incredibly deep seas, Ikeran glows like a blue-green jewel in the mellow, pale light of the star Bathys. Records of the planet that remain paint a detailed portrait of a dynamic world populated by sea-faring peoples, as well as evidence of possible previous Imperial occupation.
A relative rarity among habitable worlds, Ikeran is nearly all ocean. It possesses no continents or large land masses, and what little dry land there is exists around the planet’s equator in the form of small, rocky island chains, numerous atolls, and saw-toothed volcanic ranges. Resources: Human population, Imperial tech, archeotech

Seldon’s Folly, (Edge of Abyss, page 36) armies
have reduced the once-beautiful world to a smouldering, crater-fi lled warzone. Where the land is not poisoned it is radioactive, and the skies are clouded with chemical weapons and blackened by the smoke of charnel fires.

Redemption, (Edge of Abyss, page 36)

This blasphemous world is a small, arid moon orbiting a gas giant in the far coreward reaches of the Ragged Worlds, well within sight of the seething warp storms that hem the Expanse.
Recently declared off-limits by the Ecclesiarchy, Redemption was once the cemetery world for a long-lost cult dedicated to a heretical version of the teachings of the God-Emperor.

Unbeholden reach

Callopius Magnus (Koronus Expanse map)
Concanid (Koronus Expanse map)
Frozen Sisters (Koronus Expanse map)
Orn, a forbidden world (Koronus Expanse map)
Rameen, a death world (Koronus Expanse map)
Silverhammer (Koronus Expanse map)
Yamakor (Koronus Expanse map)

‘Undred ‘Undred Teeth

Winterscale Realm

Dominion of Mazes, (Edge of Abyss page 21)
Lucin’s breath, (Edge of Abyss page 16)
Serpent’s Cradle, Winterscale Realm (Edge of Abyss page 46)

These tales speak of the planets of the Serpent’s Cradle; where the air is pure and the water sweet, worlds that can heal any ailment. They also speak of gems the size of a human’s hand that can easily be plucked from the ground—virtual paradises, according to the storytellers. Resources: Xeno arifacts


Ultima Tectum campaign worlds: (locations currently obscure)

Kroot holy world “Ygdrasill”, Kroot world with ancient giant living tree guiding aeach Kroot shaman.

Eldar craftworld, working to save the sector from falling under dominion of ruinous powers.

Trap world of Karrad Val, stratagem of chaos reaver commander to lure imperial fleet to annihilation.

Prison world Shajol, resource planet for Chorda dynasty for organ transplants. Also destination for rich who thought they would buy a ticket to the paradise world.

Zone 15 (Battlefleet Koronus page 62)

Ancient artificial wormhole creating passage between Koronus Expanse and Jericho reach

Ancient artificial wormhole creating passage between Koronus Expanse and Jericho Reach

Imperial navy star fortress
-Guards stable wormhole leading to sector Jericho Reach. Fleet base “Metis”

zone 15 station
Ramilies-class star fort

Psychic warpscape of Koronus Expanse