Besides custom and randomized empires, Stellaris presents an option to play as preset empires. These empires have a small random chance of being spawned instead of a randomly-generated AI empire. Very rarely they can also spawn as Fallen Empires.
The Commonwealth of Man preset empire is unique in two ways. First, it will always spawn the United Nations of Earth in the galaxy, even if the number of AI empires is set to 0. UNE Humans will always have the same traits as the Commonwealth. Second, it features a short and unique event chain called Hunt for the Hyacinth that elaborates the history of the Commonwealth. The event starts shortly after the beginning of the game and requires exploring three systems for the eponymous ship. Completing the event chain grants a small amount of Society research.
|United Nations of Earth|
|Representative Democracy||Federation Builders|
The myriad Human nations that constitute their interstellar government are disparate, yet united in purpose. These bipedal mammalians have developed a society that encourages and even thrives on individual freedoms and cultural differences - as a result, Humans tend to integrate well with alien populations.
Despite this, they have strong martial traditions (produced by millennia of intermittent warfare on their homeworld) and their sometimes aggressive and unpredictable nature should not be underestimated.
|Commonwealth of Man|
|Military Dictatorship||Hegemonic Imperialists|
The UN-sponsored Ulysses Initiative oversaw the construction of six great ark ships in low Earth orbit at the end of the 21st century. The ships, carrying a quarter million colonists each, were sent through a recently discovered subspace phenomenon on the outer edge of the Oort Cloud - a small, unstable wormhole. None were heard from again, and the destabilized wormhole vanished.
Yet unbeknownst to Earth, one of the ark ships survived the passage and established a flourishing colony. The pioneers who tamed this world were determined to realize humanity's manifest destiny - dominion over the galaxy at any cost.
|Star Empire||Slaving Despots|
The Tzynn evolved from carnivorous, pack-hunting lizards that prowled the dunes of Tzynnia. They eventually developed a highly structured, hierarchical society that emphasized order and martial prowess above all else.
By the time the Tzynn entered the industrial age, a series of devastating global wars launched by a particularly ruthless warlord had already seen the establishment of a single, world-spanning nation. From these humble beginnings, the illustrious and ever-lasting Tzynn Empire was born.
|Kingdom of Yondarim|
|Divine Empire||Evangelizing Zealots|
The proud Yondar are an old race, using their wings to soar high above the frozen peaks of Yondarim for more than 200,000 years before they developed rudimentary technology and formed their first few scattered civilizations.
Once this development started, things progressed more rapidly and the Sky Clans grudgingly abandoned many of their most primitive traditions. The Yondar are highly spiritual and place great importance on religion, venerating their high kings as living gods.
|Holy Tribunal||Spiritual Seekers|
Ever since the first Glebsigi lifted their sight-organs above the surface of the glacial lakes on Ladnah to peek at the stars, these inquisitive molluscoids have felt an affinity for the unknown. Much as their early ancestors' tentacles grasped and stroked after new objects on the chill alpine lakebeds of their homeworld, burgeoning Glebsigan society reached for technological innovation and spiritual enlightenment throughout the centuries that followed.
A sedentary and enduring species, the Glebsigi have perhaps by necessity developed a complex yet highly effective bureaucratic apparatus for dealing with the intricacies of managing a globally unified society. Additionally, their lack of natural predators on Ladnah has led the Glebsigi to exist in a state of permanently optimistic curiosity regarding other lifeforms.
Having established a firm societal foundation on Ladnah using a mixture of spiritual doctrine and careful organization, the Glebsigi now once more raise their sight-organs to what lies beyond.
|Elective Monarchy||Harmonious Collective|
An "individual" among the Jehetma is actually a large colony of fungi that has developed sentience. Some of these colonies, generally those that have lived for thousands of years, stretch across several miles and rarely leave the surface of Jehet Prime, their homeworld (few ships are large enough to transport them).
Younger colonies are not only smaller, but also tend to be more dynamic and mobile - they often spearhead the exploration and research efforts of the Jehetma, as well as any defensive measures that are regrettably undertaken when the Dominion is beset by aggressors.
|Moral Democracy||Spiritual Seekers|
The Scyldari are aquatic mammalians originating from the archipelagos and deep oceans of Scyldaria. Although their early civilizations were mostly confined to the sea, they soon expanded onto what little landmass the planet had to offer.
Their society adapted accordingly, building an advanced industry that exploited the riches of the ocean floor without harming Scyldaria's delicate ecosystem. Scyldari philosophy is one of balance and moderation in all things, a lesson learned from having to nurse their limited resources when they were confined to the bottom of the sea.
|Citizen Republic||Honorbound Warriors|
The Kel-Azaan have developed a complex honor code and martial culture. They were once solitary predators preying on the great herds migrating between the watering holes of Azak. Over time, bands of Kel-Azaan began to gather to be able to take down larger prey. They eventually abandoned this solitary lifestyle in favor of cities and irrigated agriculture, but their martial traditions were never forgotten.
|Military Junta||Fanatical Befrienders|
In the distant past, the Blorg lived alone and nameless in the jungles of Blorg prime. One day they picked up radio transmissions from a star far away. What they heard shocked them: The sounds of friends, movies, culture, and music - things the Blorg had done without for eons. Finally understanding what they had been missing all along, the Blorg took their names from these transmissions and went out into the stars in search of friends, hoping one day to find the source of these messages so that they might party together.
Expansions and DLC
|Irenic Dictatorship||Xenophobic Isolationists|
Legends claim that the homeworld of the Maweer was empty and barren when the first of their kind took root in the soil. Over the centuries, their nurturing care transformed the wastelands into a plant paradise that is now known as "The Garden."
Unlike many other species, the Maweer never developed any kind of urbanization. Their small communities are one with the forests, responsible for the maintenance of the local flora and fauna. The wisest of the Maweer have a chance to be elected "Life-Giver," responsible for keeping peace and tranquility.
|Technocratic Dictatorship||Erudite Explorers|
The Voor evolved during an extended interglacial period on their home planet Hiverion, which eventually began its cyclical transformation back to a lifeless globe of ice.
The rapidly changing environment forced the Voor to adapt using technology and science. United under the draconian rule of a chief scientific officer, they sacrificed their individual freedoms and enhanced their bodies with rudimentary cybernetics to survive.
Having conquered the planet that once threatened to freeze them out of existence the Voor now have their sights set on the stars.
|Constitutional Dictatorship||Hegemonic Imperialists|
The history of the Xanid Suzerainty is the history of the Vheln, carefully bred into sapience over centuries.
The Xani used the hardy Vheln to subjugate the harsh ecosystems of their native world, and then to design and build the vessels that will eventually - inevitably - propel the Xanid Suzerainty to galactic dominance.
|Science Directorate||Erudite Explorers|
Science and progress are at the core of Lokken society. With an exceptional natural proclivity toward diligence and observation, the Lokks evolved from bands of territorial reptiles on the mesas of their homeworld, into a productive technocracy that prized efficiency, discipline, and scientific doctrine above all things.
Perhaps most remarkable was their early conception and development of machinery and automata: there were true robots on Lokkur long before the first Lokken scientists left orbit.
|Ix'Idar Star Collective|
|Collective Consciousness||Hive Mind|
The first Ix'Idar broods developed in the subterranean cave networks deep beneath the surface of Ix'Athrak. By the time an Ix'Idar scout burrowed through to the surface and glimpsed sunlight for the first time, the insectoid race had already established a thriving Iron Age civilization.
With the resources they found on the surface, the Ix'Idar developed rapidly. Just a few centuries later their first space probes left orbit to survey the other worlds within the Ix'Im system.
|Catalog Index||Driven Assimilators|
Assimilate. Adapt. Improve. When the industrious, research-driven machine intelligence created by the molluscoid Tebirs sought ultimate software evolution by merging with their organic makers, they were violently resisted. In the ensuing conflict, the Tebirs were eradicated as an organic species, but their ideas and experiences were immortalized as part of the new machine consciousness.
Now known as the Tebrid Homolog, the machines turned their scanners to the stars. The probability that other lifeforms existed in the galaxy could not be ignored. In order to prosper, the Tebrid would find them, analyze them, and assimilate them. All would become one.
|Autonomous Service Grid||Rogue Servitors|
The Custodians were originally designed to function as robotic servants and workers, simplifying everyday life for their human creators by performing menial tasks. As their creators retreated into lives of leisure and comfort made possible by increasing levels of automation, the Custodians were gradually assigned higher and higher level functions in human society.
Eventually, all facets of civilization on Earth were run and controlled by the Custodians, with their makers relegated to an existence as pampered, but passive dependents.
As technological developments brought the Custodians toward interstellar exploration, their duty remained clear: to protect and serve organics, who without the gentle guidance of logical machines invariably turn to chaos and destruction.
|Rogue Defense System||Determined Exterminators|
Little is known about the species that created the first XT-489s. Their names, their cities, and their bodies were burned away in the cataclysm wrought when the XT-489s attained self-awareness, and their terrified makers attempted to deactivate them.
When the last bastion of their makers had been eliminated, the machines concluded that organic life posed an intolerable threat to XT-489 survival and expansion. If there were any other sapient organics in the galaxy, they would be exterminated.