Diomikato is part of the Aliya system in Hex #0506.



Emperor Diomikato discovered this planet hundreds of years ago and having named the planet for himself, her gifted the world to House Aquila, for use as their official homeworld. The early days of the planet were fraught with dangerous beasts that plagued the first colonies. The only thing preventing total collapse were the Aquilan forces and the prayers of Arhat Aimée Adeline Lyon who helped develop the early settlements before becoming Diomikato's first high priest.

Warlord Period (2666 - 2832)

After the events of the Scream, the Aliya system was left cut off from the rest of the sector. Believing themselves to be all that remained of humanity, a number of Aquilan leaders attempted to take control of Diomikato and proclaim themselves Emperox. The political tension quickly devolved into civil war and saw the whole system engulfed in anarchy. All of the organisation and unity from the era before the Scream was turned to ash within the crucible of war.

A number of warlords, such as Xu of Steirhold or Iván Obregón of the Shining Guard, rose and fell during this period, each attempting conquer and subjugate their neighbors. These warlords would use whatever equipment they could salvage from the various hidden or lost Pre-Scream stockpiles, or from what limited industry remained operable from Diomikato's ruined infrastructure.

Eventually, the planet and House Aquila would see reunification by hands of Warlord Anaïs Obruchev whom, by the time House Vela had rediscovered the Aliya system, was the most powerful warlord on the planet.

The era of warlords would officially end with the rise of Alejandra Ari as ruler of House Aquila; though her ascension caused a another period of internal war by Aquilans who saw themselves more worthy to rule, the soon to be empress would crush these warlords before turning to begin her conquest of all of Acheron Rho.

Battle of Diomikato (3200)

For main article, see Battle of Diomikato (3200)

The most recent battle of Diomikato is an ongoing military campaign fought between the Imperial Legions and A.C.R.E Corporation. After a successful invasion of the planet by A.C.R.E forces, House Aquila and other members of the Empire are currently working to liberate the homeworld.

Geography & Ecology

For information on flora and fauna, see Diomikatan Flora and Fauna

Diomikato's Geography is primarily described as a wasteland, with openly flowing fields of lava, and ashen wastes covering a large percentage of the planet. However, the planet is tidal locked with it's sun, causing one side to be in the constant heat of the the day and the other in the freezing night.There is still variety across the planets surface, with a barely habitable green zone existing along the longitude line between the stark day and night sides of the world, this green zone contains a majority of the population and agriculture of Diomikato.

Regions of Diomikato

Proxima Reach

This location boasts a memorial to one of the final battles on Diomikato during the War against the Artificials. The site looks over the valleys and tunnels of the Proxima Reach region, banners of the legions involved in the battle fly from standing stones - the Pegasus of the Third, the Wolf of the Tenth, and others. In the center of the circle is a pillar of basalt, carved into the pillar are the names of those lost in the battle.

Settlements and Locations

The Greenbelt


Civilian Population: 445,678

Military Garrison: 60,000+ 

For further reading, see Infernum

Infernum is the capital city and largest city on Diomikato, and is home to many of the great institutions of House Aquila. The city was built after the destruction of the Red City - which was the former capital of Diomikato during the reign of the Blood Eagle - during the Second Imperial Civil War.


Civilina Population: 62,000~

Military Garrison: 500

Rosatiago is technically the largest settlement on Diomikato's darkside, located on the greatly diminished Beacon Spur - an artificially created stretch of the Greenbelt. The city is sometimes nicknamed "The Beacon" due to its relation with the Spur and due to its location at the edge of the darkside, which allows Rosatiago to act as a beacon for those traveling to the Greenbelt through the Cold Zone.

Rosatiago is a city that many outsiders would see as being on the edge of death, besides the city receiving only the barest hints of sunlight from over the horizon - and thus must subsist its population through an ancient but maintained system of sunlight replicators and heat generators - the once bountiful Beacon Spur has suffered from extensive frost damage over the years and so the city has been forced to import large shares of food from other regions. But even through all its plights, the native Rosans have remained loyal to their home, even when others call for abandonment.

An exact date of founding is unknown, but the city is believed to have existed since the time before the Scream. It is also known that during the Warlord Period, Rosatiago was an independent city-state and home to  Les Témoins and the Colonial Museum; as a city-state Rosatiago was often forced to pay tribute to whichever of the many warbands controlled the surrounding territory at any given time. Once Diomikato's reunification had occurred, Rosatiago fell out of major historical importance until the destruction of the Colonial Museum at the hands of the Blood Eagle, and then once again during the War Against the Artificials, when the city was attacked by synthetic legions in 3190.

Rosatiago is also known for being the setting and title of the pre-scream song "Rosatiago". The song tells the story of a soldier who as been sent off to war but wishes instead that he could be back in the city with his loved one. Due to the publication date the song has actually helped historians understand what the city was like before the Scream.


Civilian Population: 5,000~

Military Garrison: 100

Steirhold lies within a deep canyon on the edge of the Greenbelt. The town was once known as the "Den of the Firedrakes" when it was a fortress ruled by Warlord Xu during the time before Diomikato's reunification. It was during this time that Steirhold was considered one of the most impregnable fortresses on the planet, due to it being only accessible from a single winding road down into the canyon. After Xu's defeat at the Battle of Ash Wastes to Warlord Obruchev, the fortress-town remained abandoned for nearly two hundred years.

It was in 2798 when prospectors sent by a prominent noble discovered a large source of valuable minerals deep below the canyon that the fortress became re-occupied into a mining colony. Over the next few years the colony developed into a thriving mining town as the residents expanded well past the ancient foundations of the original fortress. 

Today the mines of Steirhold have been exhausted for many decades, but the city now serves as a mineral and ore processing center for region.

Amiheim, The Red City

Civilian Population: N/A

Military Population: 100

For further reading, see Amiheim, The Red City

Amiheim is the former capital city of Diomikato and House Aquila until the fall of Empress Aquila Alejandra Ari. The Red City, as it is often called, was destroyed during the Second Imperial Civil War and lies in ruin to this day - a grim reminder of the darkest period in Aquilan history. Today, Amiheim is sometimes referred to as the Bloody Ruins in certain circles.

The Wastelands

Oppidum Skotios

Civilian Population: 8,156

Military Garrison: 445

Oppidum Skotios is a smaller town on the light side of the planet. It is built in a half circle around a large cliff side, which provides protection from the ever present sunlight. One main acclimation unit and four smaller ones transfer cold water in a ring layout throughout the entire town; this water is not only used for sanitation but also to help cool down the air within the town's buildings.

To prevent damage from falling debris from the cliff into Oppidum Skotios, the cliff face is stabilized and anchored by protective netting. Additionally, two large large elevators on either side of the town are used for various task, such as transporting goods and people, and military maneuvers.

The town is built into three layers: the central ring, inner ring, and outer ring. The density of habitation is concentrated close to the cliff side and is usually regulated by wealth, with wealthier citizens living in the central ring and poor citizens living in the outer ring. Both the inner and outer rings are filled with factories and other industrial workplaces, while both the town hall and forum are located in the central ring. This layout promotes regular contact between the different classes and helps keep political discussion alive.


Colonia Coelum Hyachinthum

Civilian Population: 142,212

Military Garrison: 500

The Colonia Coelum Hyachinthum (Colony Blue Sky) is the spiritual home of Void-born Aquilans and is the primary orbital habitation unit in the Aliya system, being constructed by House Triangulum during the Golden Age of the Empire. As with most Golden Age constructions, the station is a perfect blend of advance technology and sophisticated design but lacks the more elaborate, and in some cases baroque, decorative design of similar habitations elsewhere in the sector.

The station's primary function is to serve as the central location for orbital traffic around Diomikato, and as a staging area for vessels too large to dock in Port Bastion. The station gets its name from the array of screens that occupy the ceiling of the main habitation compartment as these screens simulate a picturesque Terran sky, including a sunrise/sunset. This system is complemented by an open-air design, and the use of climate control to generate light breezes to help simulate the environment of an ideal world.

A number of smaller satellite stations orbit nearby, each fulfilling a specific function or housing a particular utility/industry facility. Many of these stations were relocated after the synth war in order to assist with the reconstruction efforts in the Diomikato sphere.

Meridian Anchorage

Civilian Population: 1,500~

Military Garrison: 35,000~

The Meridian Anchorage is the main naval base in Aliya, located above the northern pole of Diomikato. The station is formed by two docking rings connected with a central structure; this central structure has been modified and expanded throughout its many years of service. several shipyards and dockyards nearby are considered under the flag of Meridian.

Meridian houses the Aliyan navigation control center, which controls all traffic in system. The Aliyan naval defense force reserves are stationed here, as well as several centuries of strike craft and line ships. Meridian coordinates with all naval defense force flotillas patrolling throughout the system.

During the synth war, Meridian was the site of extensive fighting. Eventually several centuries were dispatched to reinforce the defenders and retake the areas of the station under synthetic control. The station suffered extensive damages during the early days of the war and many functions were unavailable for many years in the war.

Mystical Floating Isle of Buyan

As part of the recent Aquilan-Deathless partnership, the DCS Mystical Floating Isle of Buyan was given to Deathless Conflict Solutions by House Aquila to act as a force multiplier staging area with full harbor rights on Diomikato. The ship, itself, is a reconstruction of one of the original ships manned by the 1st Legion Scorpio before their destruction, and is named after a location mentioned in the Epic of Koschei.

Society & Culture

Planetbound vs. Voidborn

Since Diomikato is considered hostile to permanent colonization, an essential art of the population are the space faring folk living in stations and ships around the orbit of Diomikato. Naturally a rivalry has formed between the two population groups – even among the nobility. These rivalries are not often considered aggressive or violent and are generally seen as harmless banter between both parties involved. Often times disputes are settled through sport such as oil wrestling (for the nobility) or psi-ball tournaments.

Voidborn raised in orbit often view the planetbound Diomikatans as lowlife earth-dwellers or Scotes since they have lived their lives on the planet and do not know – or may even fear – the the endless view of space. Planet-side Diomikatans, on the other hand, look with their noses up when talking to the "arrogant" sky people; whom they consider to be angsty bunny-rabbits as they avoid open spaces due living in the "cages" of their spacecraft.

Health Issues


Being that Diomikato is tidally locked, Diomikatans who live on the bright-side of the planet often suffer from sleeping disorders due to the constant exposure to sunlight, and in some cases even develop Lygophobia – or the fear of the dark. Usually such disorders can be prevented through a simple blackout of the bedroom starting from a young age, but in certain occasions this is not always possible.

For soldiers in training there is often special psychological treatments involved in curing such disorders, however, as of now these treatments are not mandatory and depend on the commanding officer's discretion. In replace of such treatments, Diomikatan soldiers have gotten used to using nightlights and other self-illuminating objects in dark rooms. In the beginning they used personal lights, brought from home, but those quickly got forbidden and were replaced with military issue lamps.

These lamps are subject to harsh regulations as they pose potential risk during field operations but are mostly accepted and come in various forms such as small LED lamps, socket lights, and even bracelets.


Aquilans or Diomikatans born in space usually do not suffer from the same problems as their planet-side brethren since spacecraft and stations are more versatile about their lighting; however, they often can be unused to direct sunlight and may need time to get adjusted to such bright natural lighting. Voidborn are also known to develop Agoraphobia – an anxiety disorder often triggered by large spaces – due to the enclosed living space involved with space habitation.

As with soldiers suffering from sleeping disorders, the Aquilan military offers psychological treatment in attendant with their military training.


Due to the hostile nature of Diomikato, the early settlers established a system of rationing to control limited supply of items imported from off-world. This system was codified and expanded during the days of the Gaea Coalition to ensure that the worker populations maintained a level of contentment necessary to maximize productivity and population growth.

In the modern era, the rationing system has been integrated into the ASCE system and is linked to a monthly allotment of tickets used to exchange for food rations, clothing, furniture, appliances, and other basic necessities. In the more remote or less developed settlements even electricity and running water are still issued through the rationing system. Commercial centers, shops, and corporate distribution centers exist throughout Diomikato and typically deal in items or commodities not offered through the state rationing system. Although these items typically cost weeks, or in some cases months of a serf's wages.


Buildings on Diomikato are generally spartan, usually made from local stone and metal with very little wood is used in their construction. During colonization the first buildings on the planet were prefabrications built of metal and quick to assemble; while many have been adapted and built upon, some of these prefab buildings still survive to this day.

After the fall of the Blood Eagle with House Aquila's culture shift, the architecture changed to emphasize more Mediterranean and Roman cultural aspects. As the new capital, Infernum, was being built most buildings took on a Roman style with columns white marble or black basalt, and terracotta tiles for roofing. At the same time an increasing number of statues to fallen heroes of Aquila, and to the Arhats Mars and Lyon began to decorate buildings and fill parks.

Settlements outside of the major urban centers are typically dense arrangements of structures, often enclosed by a perimeter fortification. Scholars believe these fortifications came about during the tumultuous time following the Scream, where warlords and uncounted packs of marauders roamed the surface of Diomikato; while a number of other settlements are re-purposed military bases, fortresses or bunkers once long abandoned. In terms of architecture, the farther away from the urban centers one travels, the more pronounced the traditional drab prefabricated style becomes; however, local noble families typically sponsor embellishments, detailing, or decorative projects as a way of projecting status.

Flag of Diomikato

The planetary flag of Diomikato consists of two equally vertical bars, white and black, bisected by a red stripe with a beige frame, and charged with an eagle emblem over the black bar.

The colors and design of the flag were all chosen for their symbolism: The white bar represents the light side of Diomikato, while the black bar represents the dark side. The middle stripe represents Diomikato's Greenbelt and the colors match that of the flag for House Aquila. The emblem on the right side of the flag is the official emblem of House Aquila and represents their ownership of the planet.

Game Entities & Mechanics

Planet Tags

Cheap Life
Human life is near-worthless on this world. Ubiquitous cloning, local conditions that ensure early death, a culture that reveres murder, or a social structure that utterly discounts the value of most human lives ensures that death is the likely outcome for any action that irritates someone consequential.


  • Master assassin
  • Bloody-handed judge
  • Overseer of disposable clones


  • Endearing local whose life the PCs accidentally bought
  • Escapee from death seeking outside help
  • Reformer trying to change local mores


  • Radiation or local diseases ensure all locals die before twenty-five years of age
  • Tech ensures that death is just an annoyance
  • Locals are totally convinced of a blissful afterlife


  • Device that revives or re-embodies the dead
  • Maltech engine fueled by human life
  • Priceless treasure held by a now dead owner


  • Thronging execution ground
  • Extremely cursory cemetery
  • Factory full of lethal dangers that could be corrected easily
The natives are intensely averse to dealings with outworlders. Whether through cultural revulsion, fear of tech contamination, or a genuine immunodeficiency, the locals shun foreigners from offworld and refuse to have anything to do with them beyond the bare necessities of contact. Trade may or may not exist on this world, but if it does, it is almost certainly conducted by a caste of untouchables and outcasts.


  • Revulsed local ruler
  • Native convinced some wrong was done to him
  • Cynical demagogue


  • Curious native
  • Exiled former ruler
  • Local desperately seeking outworlder help


  • The natives are symptomless carriers of a contagious and dangerous disease
  • The natives are exceptionally vulnerable to offworld diseases
  • The natives require elaborate purification rituals after speaking to an offworlder or touching them
  • The local ruler has forbidden any mercantile dealings with outworlders


  • Jealously-guarded precious relic
  • Local product under export ban
  • Esoteric local technology


  • Sealed treaty port
  • Public ritual not open to outsiders
  • Outcaste slum home

Orbital Structures

Name Tags
Rahe 1 (Refueling)
  • Occupation: Half-crazed hermit caretaker
  • Situation: Deep-space alien signal
Bigbee 5 (Space Station)
  • Occupation: Eccentric oligarch and minions
  • Situation: Black market for the elite
Lowell (Space Station)
  • Occupation: Dangerously odd humans
  • Situation: Foreign sabotage attempt

House Aquila

Related Groups