Unique systems

Version

Please help with verifying or updating older sections of this article. At least some were last verified for version 3.9.

This article is for the PC version of Stellaris only.

Exploration

FTL

Unique systems

L-Cluster

Unique systems can only spawn once per galaxy and are entirely predefined, as opposed to being randomly created. Each unique system has an unique event, anomaly or archaeology site related to it. They will never appear in hyperlane choke points and a few of them require distance from all empires to spawn and they might not appear if the galaxy is started with a max number of fallen empires and AI empires, especially if advanced starts are used.

Guaranteed systems[]

The following systems will always appear in every game:

Hauer

This class G system contains an unique object, the Tannhäuser Gate, guarded by 3 Ancient Mining Drones. If the

Ancient Relics DLC is installed then the planet Spjuuht contains the Never Forget archaeological site.

Hillos

This system contains an alien science ship marked as hostile. One of the planets is a Tundra World that when surveyed will reveal a level III anomaly. Investigating it will issue a special project that takes 360 days to research. Completing the special project a moderate amount of

Physics research.

Klendath

This system contains two barren worlds and a moon and is defended by an Ancient Mining Drone. In addition the planet Klendath I will reveal the Crashed Starship archaeological site.

Orvall

Unlike every other system Orvall not named after the central star. The system has a golden nebula visual effect regardless of whether it is spawned inside one or not and is guarded by a small Tiyanki fleet. If the

Ancient Relics DLC is installed then the broken world Moor-Hsrettu contains the Desiccated archaeological site.

Xraneax

This class G system contains a Tomb World guarded by a missiles-equipped destroyer and two asteroids with a deposit of 5

Minerals each. Defeating it grants a choice of gaining a small amount of

Engineering research or renaming the planet Lone Defender and gaining a moderate amount of

Unity (large amount if the empire is

Memorialist).

Ubogleelt

This system is guarded by a ship of 2K fleet power and contains a broken world that has 3 notable moons: a size 5-7 Gaia world and two Barren worlds with the

Terraforming Candidate planet modifier. The Gaia world also has a Locust Swarm planet modifier giving it the following effects:

−10% Happiness
−25% Immigration Pull
−15% Orbital Bombardment Damage
+15% Defense Army Health

Shielded Relic: Randomly named system contains a size 26 Shielded World guarded by a fleet of 5k fleet power with ships identical to the ones guarding Zanaam. Surveying either the Shielded World or its moon will reveal the Moon Base archaeological site.
Omni: Randomly named system contains a Relic World that when surveyed will reveal the Ruined World archaeological site.

Wenkwort[]

Wenkwort contains a Gaia world called Wenkwort Artem with the unique Wenkwort Gardens planet modifier well as a level IV anomaly. When the anomaly is investigated it grants a very large amount of society research and issues a special project on a Barren world called Rellrait and creates 3 neutral Ancient Mining Drones that patrol the system. The special project adds a deposit of 3 Society Research to Rellrait and gives it the Terraforming Candidate planet modifier as well as a unique planet modifier granting it +3% Happiness and −15% Upkeep from Jobs.

Wenkwort Artem has a unique planet modifier called Wenkwort Gardens. When the planet is first colonized the player will be contacted by a custodian robot and informed that industrialization of the planet is to be kept at a minimum. If the request is accepted Wenkwort Artem will gain a second planet modifier giving it the following effects:

+40% Bureaucrat output
+20% Researcher output
−30% Artisan output
−70% Miner and Strategic Resource Gatherer output
−70% Gas refiner output

Refusing will have a fleet of around 7K fleet power arrive in 20 days and give one last chance to accept the modifier before attacking.

Helito[]

Helito is a binary system that contains a unique level VII anomaly on one of its stars. Investigating it will grant a large amount of Physics research and the option to reveal a new adjacent system called Dacha.

Dacha contains 6 Gaia worlds and entering it will grant a moderate amount of Physics research. Each planet is colonized by a unique Early Space Age pre-FTL civilization called Habinte Unified Worlds. If an Observation Post is constructed an event will immediately fire giving full awareness and establishing contact with Habinte Unified Worlds. 5 years after establishing first contact they will ask the empire to leave the system. If the offer is accepted the empire capital system will gain a size 25 Gaia world but all Observation Posts in Dacha will be dismantled and new ones cannot be constructed.

If the offer is refused or any Habinte Unified Worlds planet is invaded or targeted with a colossus all invading armies are destroyed, all ships in the system will go MIA and the hyperlane leading to the system will be removed. If the system is entered again via alternative means hyperlane connections will be created with the nearby system and the pre-FTL civilization will immediately become an unique empire with all technologies of the empire that invaded, a fleet that uses 70% Naval Capacity and a decaying −1000 Opinion towards the empire that invaded.

Alpha Centauri[]

Alpha Centauri always spawn as a neighbor of Sol along Barnard's Star, Procyon and Sirius if Sol is chosen as a starting system. Alpha Centauri III will always match the climate preference of the primary species from Earth if guaranteed habitable worlds were enabled. Proxima Centauri b will be a frozen world with the File:Tidal locked.png Tidal Locked planet modifier and a level I anomaly. Investigating the anomaly will grant a small amount of Unity and give Proxima Centauri b the Terraforming Candidate planet modifier.

Randomly spawned systems[]

The following systems have their spawn chanced determined by the galaxy size. The percentages for each unique system to spawn are the following:

**Base game**
Galaxy	Trappist	Odryskia	Polaris	Parvus	Zanaam	Sanctuary	Shallash	Sol	Larionessi Refuge	Zevox	Ancient Manufactory	Ultima Vigilis	Federation's End
Tiny	20%	20%	10%	6%	6%	4%	6%	50%	25%	25%	25%	25%	25%
Small	40%	40%	20%	12%	12%	8%	12%
Medium	60%	60%	30%	18%	18%	12%	18%
Large	80%	80%	40%	24%	24%	16%	24%
Huge	100%	100%	50%	30%	30%	20%	30%

**DLC**
Galaxy	Ruined ringworld	C.A.R.E.	Leviathans systems	Distant Stars systems	Ruined megastructures	Star Mall	Scion of Vagos systems
Tiny	6%	16%	16% for each system	16% for each system	8% for each system	6%	25%
Small	12%	32%	32% for each system	32% for each system	16% for each system	12%
Medium	18%	48%	48% for each system	48% for each system	24% for each system	18%
Large	24%	64%	64% for each system	64% for each system	32% for each system	24%
Huge	30%	80%	80% for each system	80% for each system	40% for each system	30%

Sol[]

If none of the starting empires have Sol as their home system there's a 50% chance that it will spawn in the galaxy. Earth can be found in one of four states. Unlike other pre-FTL civilizations humans use regular flags and have additional armies.

Age	Human ethics	Bonus armies	Notes
Late Medieval Age	Authoritarian Spiritualist Xenophobe	Feudal Levies (primitive army) Feudal Levies (primitive army) Feudal Levies (primitive army)
Machine Age	Fanatic Militarist Materialist	British Armed Forces (industrial army) German Wehrmacht (industrial army) Imperial Japanese Forces (industrial army) Soviet Red Army (industrial army) US Armed Forces (industrial army)	In Ironman mode successfully invading at this time will unlock the Outside Context achievement
Early Space Age	Fanatic Egalitarian Xenophile	Chinese PLA (postatomic army) EU Combined Forces (postatomic army) Russian Armed Forces (postatomic army) US Armed Forces East (postatomic army) US Armed Forces West (postatomic army) ISS II (space station)	If they discover FTL they will become the United Nations of Earth
Nuclear Wasteland	Species destroyed	None	Earth is a tomb world with a unique level I anomaly When investigated the anomaly will reveal a species of pre-sapient cockroaches with the Tomb World climate preference and the Adaptive trait If the Underground Vault event chain starts on Earth the created species will be human If the Ancient Relics DLC is installed terraforming Earth has a 50% chance to reveal the Weapons Cache archaeological site

Trappist[]

Trappist is a real life system that contains 3 habitable planets - one from each climate category - making it well above average, compared to the default game setting for habitable worlds. The features and possible modifiers of all planets are randomized.

Planet	Trappist I	Trappist II	Trappist III	Trappist IV	Trappist V	Trappist VI	Trappist VII
Class	Molten	Barren	Toxic	Desert	Continental	Arctic	Frozen
Size	16	16	12	14	16	18	12

Odryskia[]

A randomly named system will contain an asteroid called The Cabin. Surveying it will reveal the Debris Belt archaeological site.

	Chapter 1	Chapter 2	Chapter 3	Chapter 4
Difficulty	9	8	6	6
Rewards	1-5 Minor Artifacts	1-5 Minor Artifacts	33% chance the science ship scientist gains the Maniacal trait 33% chance the science ship scientist gains the Paranoid trait	Gain the Crystal of Odryskia relic

Polaris[]

Polaris contains a size 23 Ocean World with the unique Ancient Sunken City planetary feature and the One Last Hope archaeological site. It is defended by a 3k molluscoid fleet named Polarian Automated Fleet. The fleet guarding it consists of 7 cruisers named after ice formations. The fleet is hostile, however it is not set to aggressive stance, simply blocking any approach to the system's star. After they are defeated the system can be claimed as usual. The cruisers use the following loadout:

Weapons	Utility	Core
3 Missile T3 1 Plasma T2 3 Disruptor T3	4 Armor T4 4 Shields T4	Hyper Drive III Advanced Combat Computer (Line) Plasma Thrusters Subspace Sensors Antimatter Reactor

Parvus[]

Parvus contains a size 22 Desert World with a level VI anomaly. Investigating it will give the planet a nanite swarm modifier that ensures 0% Habitability and Happiness if the planet is colonized as well as issue a special project. The special project requires 300 days to be completed and brings 3 options:

Studying the swarm grants the Administrative AI technology. If already researched it will grant a moderate amount of Physics Research instead.
Destroying the swarm requires a fleet of 2K fleet power to be brought in orbit of the planet, removes the modifier and gives the planet the Nanite Swarm Remains planetary feature.
Taming the swarm requires the Self-Evolving Logic technology and starts another special project that requires 300 days. Finishing it clears all blockers from the planet, terraforms it into one that matches the primary species' climate preference and replaces the modifier with Tamed Nanite Swarm. If you are Void Dwellers it will terraform to a Gaia world.

Zanaam[]

Zanaam contains Zanaam, a size 25 Gaia World with the unique Valley of Zanaam planetary feature and defended by an 19k fleet named Guardians of Zanaam. The fleet guarding it consists of 24 destroyers, named from Alpha to Omega, which look like Ancient Mining Drones but use far more advanced components. Upon entering the system, the player is given a message stating they will be destroyed. The fleet is hostile, however it is not set to aggressive stance, simply blocking any approach to the system's star. After they are defeated the system can be claimed as usual. The destroyers use the following components:

Weapons	Utility	Core
2 Laser T5 2 Plasma T3	2 Armor T5 1 Shields T5	Sapient Combat Computer (Swarm) Impulse Thrusters Tachyon Sensors Zero Point Reactor

Sanctuary[]

Sanctuary containts an abandoned ring world of previous Enigmatic Observers. Originally created to act as a nature preserve and house primitive life, the system was abandoned but left guarded by multiple defense platforms of approximately 42k fleet power. Upon discovering the system an empire is contacted by the automated defense facility, which explains the history and purpose of the facility and fires upon any ship that approaches it. However, the Sanctuary system is usually quite large (especially compared to other Ring World systems), and the ranges of the platforms is limited. With a little bit of micro management, ships can easily be navigated through the system without entering combat.

The Sanctuary defenses contain the following stations:

	1 Sanctuary Core	4 A-1 Fortresses	11 A-2 Outposts
Weapons	10 Kinetic Artillery 10 Gauss Cannon 4 Point-Defense T3	6 Laser T5 10 Laser T5 4 Plasma Cannon T3 4 Point-Defense T3	2 Laser T5 5 Laser T5 2 Point-Defense T3
Utility	10 Armor T5 10 Shield T5 4 Shield Capacitor	10 Armor T5 10 Shield T5 4 Shield Capacitor	3 Armor T5 3 Shield T5 2 Shield Capacitor
Core	Zero Point Reactor Tachyon Sensors	Zero Point Reactor Tachyon Sensors	Zero Point Reactor Tachyon Sensors

Despite having no engine modules, stations are, in fact, mobile, and therefore cannot be engaged with artillery ships from a safe distance, one by one. Defeating them may prove a challenge but destroyed platforms are not rebuilt, allowing the system to slowly be overtaken.

The ring world is almost completely intact and each habitable segment houses a randomized pre-FTL species, none of them advanced beyond the Steam Age. Any empire that manages to defeat the platforms can lay claim to the extremely valuable system and decide the fate of the inhabiting species. It should be noted that since the species have evolved and reached sapience on the ring world they have the Ring World climate preference which hampers their ability to colonize without compensatory methods.

Larionessi Refuge[]

Larionessi Refuge has deposits that total 5 Physics, 11 Minerals and 4 Alloys. It also contains a planet that will be a Relic world if Ancient Relics is installed and a Tropical world if the DLC is not installed. The planet has the The Signal archaeology site.

	Chapter 1	Chapter 2	Chapter 3
Difficulty	2	3	4
Rewards	1-5 Minor Artifacts	1-5 Minor Artifacts	Larionessi Consciousness unique empire as a vassal if not Genocidal 350-100000 Engineering Research if Genocidal 350-100000 Society Research if Genocidal

Zevox[]

Zevos has deposits that total 10 Energy, 3 Minerals, 4 Alloys and 2 Rare Crystals. The barren moon called Zero-Two contains the The Crashed Ship archaeology site.

	Chapter 1	Chapter 2	Chapter 3	Chapter 4
Difficulty	4	3	2	1
Rewards	1-5 Minor Artifacts	1-5 Minor Artifacts	1-5 Minor Artifacts	500-1000000 Society Research if biological empire The planet becomes a Gaia World if robot empire

Ancient Manufactory[]

A random system in the galaxy will contain an asteroid field where one of the large asteroids is orbited by an Ancient Manufactory identical to the Mining Drone stations. Surveying the asteroid will reveal a level III anomaly. Investigating it will bring the option to either:

Leave the manufactory alone. Xenophobe and Fanatic Xenophobe empires will gain 100 Influence from this option.
Start a Special Project to restore the manufactory with a fleet. Not available to Fanatic Xenophobe empires. Possible outcomes are granting the Rare Crystals Manufacturing technology, launching the manufactory into the star and awakening 3 hostile Ancient Mining Drones or Crystalline Entities. If the system has been claimed another possible outcome is turning the manufactory into a mining station and adding a deposit of 10 Minerals to the star.

Ultima Vigilis[]

Ultima Vigilis is a system with an appearance similar to the Contingency core system. The system does not have any hyperlane connection so it can only be entered via jump drives. It contains one deposit of each advanced resource and a unique AI world, called Observation Terminal, with the Ancient Robot World archaeology site. The system is guarded by 3 Fallen Empire fleets, each made up of 1 titan, 5 battlecruisers and 20 escorts.

	Chapter 1	Chapter 2	Chapter 3	Chapter 4	Chapter 5
Difficulty	1	2	2	5	8
Rewards	small minor artifacts reward (10, 30, or 50)	small minor artifacts reward (10, 30, or 50)	small minor artifacts reward (10, 30, or 50)	small minor artifacts reward (10, 30, or 50)	large minor artifacts reward (100, 200, or 300) and a choice of: Change world to Machine world and gain 80 machine pops – only if Machine Intelligence Create a fully upgraded Sentry Array Gain 80 robotic pops across random owned colonies – only if Robotic Workers policy is Allowed Add a 25 alloys deposit on the world – only if Spiritualist Create a Machine Intelligence subject in system, and change world to Machine world with 80 machine pops – only if Spiritualist

After successfully investigating the archaeology site 5 options are displayed. Unless option 2 is chosen, there is a 50% chance that the Unbidden can spawn prior to the endgame start date; if so, every 5 years there is an 80% chance for the crisis to trigger, with that chance increasing significantly after the endgame start date. As such, it is helpful to delay excavating the archaeology site until such a time that the player can defeat the crisis.

Shallash[]

A system that can only spawn bordering the Xenophobic Isolationists may contain Shallash, a Tomb World orbited by 6 moons equidistantly that contains the Ruined Star System archaeology site that can be excavated. The system also contains multiple Minerals deposits. It is patrolled by a Xenophobic Isolationists battlecruiser.

	Chapter 1	Chapter 2	Chapter 3	Chapter 4
Difficulty	1	2	3	4
Rewards	1-5 Minor Artifacts	1-5 Minor Artifacts	1-5 Minor Artifacts	10-30 Minor Artifacts Next level of terraforming technology if the Xenophobic Isolationists were not defeated Next level of robotic pops technology if the Xenophobic Isolationists were defeated and the main species is biological 700-4000 Unity if the Xenophobic Isolationists were defeated and the main species is robotic

Federation's End[]

A black hole system. If Utopia is installed it contains a habitat complex inhabited by a pre-FTL civilization in the Atomic Age.

Star Mall[]

A random class G system in the galaxy will contain an avian Habitat and multiple asteroids holding billboards. The habitat has the unique Promenade planetary feature and Star Mall modifier. All district slots as well as the Promenade are initially blocked by blockers that require Energy and Minerals to remove.

Ruined ringworld[]

A random system in the galaxy will contain a ruined ringworld. As with all ruined megastructures the ringworld can be repaired if the empire has the Mega-Engineering technology.

If the Distant Stars DLC is also installed the star has a 50% chance to contain a unique level VI anomaly. Investigating it will add a deposit of +3 Physics to the star. If the empire is Fanatic Purifiers or Determined Exterminator it will gain 125-250 Influence and 100-500 Unity. Otherwise investigating the anomaly will bring the option to either:

Issue a special project to thaw the clones. The project takes 30 days to complete and will create on a random world two Pops of a species with the Proles, Strong, Nerve Stapled and Tomb World climate preference traits. If the empire has the Devouring Swarm civic it will instead gain 350-2000 Food and 100-500 Unity.
Leave the clones in stasis and a deposit of +4 Society Research to the star. If a ringworld segment is repaired and colonized the empire will get the option to either instantly thaw the clones and create on the colonized segment two Pops of a species with the Proles, Strong, Nerve Stapled and Tomb World climate preference traits or leave the clones in stasis and add the Cryonic Clones Monument planetary feature to the colonized segment.

C.A.R.E.[]

A random binary system in the galaxy might contain a Relic World. Surveying it will reveal the Planetary Machinery archaeological site that can be excavated.

Finishing the excavation will open a dialogue window with C.A.R.E. Interactive Interface. Agreeing to help it will issue the Develop A Cure For The Ferrophage Special Project. Finishing it takes 10 years and grants the Defragmentor Relic while the Relic World gains a permanent +10% Energy from Jobs modifier. Refusing will grant 100 Influence instead.

Distant Stars systems[]

Junk Ratlings[]

A random pulsar system in the galaxy might contain a Tomb World planet called Ruinous Core orbited by a Tomb World moon called Lost Encampment, as well as various debris throughout the system. A similar nearby system will contain three Tomb Worlds: Silent Colony, Decayed Hub and Crumbling Borough. A second nearby system will contain a Tomb World called Fallen Outpost. Unlike other Distant Stars systems, these systems will give a notification when one is entered for the first time. Surveying Ruinous Core will reveal a level II anomaly. Investigating it will grant a significant amount of Society research.

25 to 35 years after the first system has been entered a species called Ketling will emerge in any of the three systems that haven't been claimed by an empire. A special project will be added to investigate any Tomb World in one of those systems and doing so will grant a large amount of Society research.

Planets with Ketlings cannot be colonized but can be invaded. If invaded they will suffer a Culture Shock identical to invading a pre-FTL civilization.

Another 25 to 35 years after the Ketling have emerged they will become the Ketling Star Pack. All their planets will be filled with buildings and they will get 10 armies and a fleet of 8 cruisers, 8 destroyers and 10 corvettes. If any of their systems have been invaded or claimed with a starbase they will have a temporary −20 Opinion towards the Starbase's owner empire.

The exact delay of both the species emergence and the empire creation are set at the moment the preceding event occurs, so reloading a save prior to their appearance will not change the delay unless the save is far enough back.

Sea of Consciousness[]

A random binary star system might contain a size 24 Ocean World with a unique appearance that does not contain landmasses among other uninhabitable planets. The planet has no blockers and has a Betharian Fields planetary feature. It also has the unique Sea of Consciousness planet modifier, which is removed if the planet is terraformed into anything except a Continental or Gaia World.

Surveying the planet will reveal a level V anomaly. Investigating it will not grant anything to a Gestalt Consciousness empire but will grant other empires a moderate amount of Society research and issue a special project that requires a starbase if there isn't one already. Within half a year after the special project is completed a scientist leader will request to leave for the planet and bring three options:

Allow the scientist leader to leave. One year later the empire will gain a random Psionics technology. If all technologies are researched it will instead grant a large amount of Physics and Society research.
Disallow the scientist leader to leave. 3 months later the scientist will die. 10 years later the empire will gain a random Psionics technology. If all technologies are researched it will instead grant a large amount of Physics and Society research.
Remove the scientist Leader, ending the event chain.

If the scientist is dead, you will get a random psionic technology in 10 years instead of 6 months.

Twin Tomb World Civilizations[]

This star system contains two Tomb Worlds, both with humanoid Bronze Age civilizations with the Post-Apocalyptic origin. Surveying the second Tomb World will reveal a level III anomaly. Investigating it will grant a moderate amount of Society research. The species are always the following:

Czyrni	Pyorun
Survivor Charismatic Quarrelsome Intelligent Talented Solitary	Survivor Charismatic Quarrelsome Resilient Strong

This system will not spawn if primitives have been disabled.

Gish[]

A class B star system that can only appear if the game difficulty is not set to Civilian or the game was started with at least one AI empire contains a Shielded World typically called Gish showing a desert planet underneath, although the name may vary. Surveying will reveal a level IV anomaly. Investigating it will bring the option to either:

Repair the shield with a science ship to add a 8 Physics and 4 Society deposit to the world for a few decades.
Interrupt the time loop with a science ship, gaining a small amount of Physics research. There is a 50% chance of the world turning into a tomb world and a 50% chance of creating the Prikkiki-Ti empire.
Leave the planet alone and gain 150 of Physics and Society research. Around a decade later, if the system is not owned by another empire, the Prikkiki-Ti empire will emerge.

Paridayda[]

This system can only be found through the Ancient Hulk anomaly by choosing the option to search for the planet will start a special project. Finishing it will create a neighbor system and point to a Barren World inside. Choosing to investigate further when entering the system will start a special project to investigate the planet with a science ship. Finishing the special project takes 60 days and will reveal the planet as a size 25 Gaia World with the Stone Age Mardak Vol civilization and the unique Paridayda planet modifier.

A few days after the system has been claimed a species called the Vol will arrive with a fleet to purge the Mardak Vol. Accepting will destroy the civilization and add a removable blocker to the planet. Refusing will have the fleet attack the system. If their fleet is not defeated they will bombard the planet with the Armageddon stance. Once all Mardak Vol pops are killed by bombardment all tiles on the planet will get 4 removable blockers.

Accepting is the recommended course of action as not only does it avoid the fight but the Mardak Vol would take a long time to enlighten or remove Stellar Culture Shock and have the Gaia World climate preference. In addition if the planet is colonized the colonists will gain +10% Happiness for 10 years.

Other systems[]

Abandoned Observation Post

This class F star system contains an Abandoned Observation Post orbiting a habitable world. Surveying the planet will reveal a level IV anomaly. Investigating it will bring the option to either:

Investigate the observation post with a science ship to gain a moderate amount of Society research.
Leave the observation post alone for 50 Influence.

Abandoned Star Platform

This system contains an Abandoned Star Platform orbiting a pulsar star. Surveying the star will reveal a level IV anomaly. Investigating it will bring the option to start a 60 days special project to either:

Repair the platform with a construction ship to add a 6 Energy deposit to the pulsar.
Salvage the platform with a science ship to gain 20% to the next level of lasers technology.

Caretaker Escape Pod

This binary star system has as its last planet a Gas Giant with escape pods in orbit. Surveying the planet will reveal a level III anomaly. Investigating it will bring the option to either ignore the pod for a small amount of

Influence or hail it and get the following options:

Valid if AI is not outlawed: Accept Caretaker AX7-b, gaining a renowned paragon. If the empire is individualist Caretaker AX7-b will have the Caretaker destiny trait. If the empire is Gestalt Consciousness the Growth Node will gain the Caretaker Teachings destiny trait.
Valid if AI is not outlawed: Examine Caretaker AX7-b for a moderate amount of Engineering research.
Valid if AI is outlawed: Destroy the pod for a small amount of Influence.
Valid if Machine Intelligence: Recycle Caretaker AX7-b for a small amount of Minerals and Engineering research.

Gaia Civilization

This class M star system contains a Gaia moon orbited by a derelict station. Surveying the moon will reveal a

Stone Age civilization with the

Extremely Adaptive,

Slow Breeders,

Sedentary and

Gaia World climate preference traits, as well as a level VI anomaly. Investigating it will grant a significant amount of

Physics and

Society research. This system will not spawn if primitives have been disabled.

Rudimentary Robots

This star system contains a single habitable world with the

Metal Boneyards planetary feature among other uninhabitable planets. Surveying the planet will reveal a level I anomaly. Investigating it will add 3 or 4 robot Pops on the planet. After the planet is colonized you will be given the option to either:

Dismantle the robot Pops and gain 100 Minerals.
Keep using the robots. 90 days later a special project to investigate the robots with a science ship is given. Finishing the special project takes 30 days and gives a large amount of Society research.

Regardless of the chosen option, around 5 years after the planet has been colonized a number of colonists will gain the Erratic Behavior modifier, giving −25% to

Happiness,

Governing Ethics Attraction and Resource Production, and a special project to investigate it will be added, costing 60

Society research. Finishing the research project grants a random

Biology technology. If the special project is not completed in 4 months three enraged colonists armies will form and attempt to occupy the planet.

Superflares

This class G star system contains a number of uninhabitable planets and a gas giant with multiple moons, one of them being a Tomb World with the unique

Irradiated Valley planetary feature. Another one of the planets is a frozen world with a level I anomaly. Investigating it will add a 4

Society deposit to the world. The star also has a 3

Physics deposit instead of a regular Energy one. A year after the planet is colonized a special project will be added to shield the colony with a science ship. The project takes 30 days to complete and gives the planet a +10%

Unity from Jobs modifier. The scientist will also gain the

Expertise: Field Manipulation trait. If the project is not started in 150 days one pop will die and the planet will get −10%

Habitability and −15%

Energy from Jobs for 20 years.

The Veil

This binary star system contains a planet that will appear either as a Gaia World or a Shrouded World. Surveying it will reveal the Phase-Shifted planet modifier (−50%

Planet Build Speed) and the only level X anomaly besides certain precursor anomalies in the game. Investigating it will describe how every 3 months the planet shifts between a Gaia World and a Shrouded World and grant a moderate amount of

Physics. Once the system has been claimed you will be given the option to either:

Leave the planet for a moderate amount of Influence.
Start a special project to use a science ship to freeze the phase-shift. The project takes 180 days and finishing it permanently sets the planet to a Gaia World. It will also grant a moderate amount of Physics research.

Scion of Vagros[]

Scion of Vagros are a group of 5 unique systems. They can be exploited by any empire in any order but only the first empire that enters the Dugar system will gain the full benefits.

The Dugar system when first entered will bring the option to start a special project on the planet Dugar IV. The special project requires 360 days and completing it will start a second special project on the empire capital. The second special project requires 180 days and completing it will grant the Relic Fragment relic and optionally the Keides, Scion of Vagros legendary paragon in 20 years.

The Ivusheh system contains a Desert World with the unique Ship Junkyard modifier and 1 Fallen Shipyard and 6 Crashed Ships planetary features.

The Taprib system contains a Tropical World with the unique Hostile Planet modifier and 1 Aggressive Wildlife and 3 Aggressive Flora planetary features.

The Vapob system contains an Alpine World with the unique Molten Mineral Rivers modifier and 3 Volcanic Activity planetary features.

The final system, Sursect, will only appear after an empire completes the event chain and is mainly accessible through a wormhole. It contains a Relic world with the unique Pulsar Flares modifier, 1 Scarred Land and 2 Ancient Facilities planetary features and the Vagrosian Ruins excavation site which can only be excavated by the Keides, Scion of Vagros legendary paragon. The system is protected by a fleet of 72 ships identical to the Guardians of Zanaam. The fleet can be defeated either directly, by completing a special project that requires 6000 Engineering Research or by surrendering the The Key relic. The system has the Vagrosian Ruins archaeological site.

Privateers[]

This system will not appear if the Apocalypse DLC is enabled, Privateers being replaced by the Marauders.

A random system in the galaxy will be home to the Privateers, a group of 3 pirate fleets which must be defeated:

Young Blood contains 12 corvettes and uses tier I components
Scarred Veterans contains 4 corvettes, 16 destroyers and 20 cruisers, and uses tier II components
Old Guard contains a battleship and uses tier III components

All fleets are balanced but have a slight bias towards armor components, making fleets with a slight bias towards energy weapons the counter. However the system's only resources are two asteroids with slightly higher Minerals deposits.

Ithome cluster[]

The Ithome cluster has a 25% chance to spawn each game unless the game difficulty is set to Civilian or the game was started without AI empires. It does not have a hyperlane connection to the rest of the galaxy but it is connected to it via a wormhole. The cluster is controlled by a Fanatic Purifiers called "The Chosen". The empire that will not discover the Wormhole Stabilization technology before the mid-game year.

The system connecting the Ithome cluster to the rest of the galaxy, called Ithome's Gate, contains a deposit of 2 Dark Matter and 3 habitats. All habitats have size 3, an advanced resource planetary feature and a modifier giving it max Habitability and Building Slots. The system at the heart of the cluster, called Aspharelle, contains 3 Gaia Worlds. A nearby system called Taremes contains a very large amount of Energy, Minerals, Rare Crystals and Volatile Motes deposits.

Beyond the cluster there is a disconnected system called Ophala which can only be entered via jump drives. The system contains a size 25 Gaia World with a Stone Age Charynoi civilization (the same species as the cluster's empire) and the Abandoned Observation Post archaeological site.