Planet modifiers

Version

Please help with verifying or updating older sections of this article. At least some were last verified for version 3.6.

This article is for the PC version of Stellaris only.

Celestial body

Classification

Colonization

Terraforming

Planetary features

Planet modifiers

Each planet has a small chance of containing a modifier that will affect the colony should the world be colonized. They may be positive, negative or mixed, identified by the color of the modifier's border.

Random anomalies can generate a great variety of planet modifiers but those usually do not have any effects.

Random modifiers

These modifiers can appear at random on any planet outside an empire's home system. Some of them can be removed if the planet is terraformed.

	Modifier	Effects	Spawn chance	Removed by terraforming	Description
	Bleak	−5% Habitability −10% Food from Jobs −2 Max Agriculture Districts	×0 if Tropical ×0 if  Lush	Yes	Life struggles to survive here, and while some clings to a tenacious existence it is anemic and sickly.
	Poor Quality Minerals	−25% Minerals from Jobs −3 Max Mining Districts	×4 if  Low Gravity ×0 if  Carbon World	No	It is unknown if this planet simply formed this way, or if some unknown race once stripped it of its more valuable resources. However, we do know that the minerals present on this planet are of unusally poor quality.
	Tidal Locked	−30% Max Districts	×3 if moon Always present on Proxima Centauri b	No	This world is tidally locked around its star, meaning that one side always has daylight while the other is locked in eternal darkness. If life exists here, it is likely limited to the twilight regions where the two sides meet.
	Weak Magnetic Field	−5% Habitability −5% Pop Growth speed	×2 if  Low Gravity ×0 if  Strong Magnetic Field	No	Although habitable, this world has a weak or non-existent magnetic field that offers little protection against cosmic radiation.
	Hazardous Weather	−10% Habitability −5% Happiness +20% Energy from Jobs +4 Max Generator Districts		Yes	This world suffers from unstable weather patterns, with violent storms frequently appearing out of nowhere to wreak havoc on the surface.
	Hostile Fauna	−10% Habitability −5% Happiness +20% Society From Jobs	×2 if  Lush ×2 if  High Gravity ×0 if  Titanic Life	Yes	This world has evolved extremely Hostile Fauna, and the surface is rife with lethal predators waiting to ambush their next meal. Their biology offers great research opportunities, however.
	High Gravity	+10% Building cost +10% District cost −5% Habitability +2 Max Districts	×2 if  Planet Size > 19 ×0 if  Planet Size < 12 ×0 if  Low Gravity	No	This planet is unusually dense and so has uncomfortably high gravity.
	Low Gravity	−10% Building cost −5% Habitability	×0.5 if  Planet Size >19 ×0 if  High Gravity	No	This planet has an unusually low density and therefore much lower gravity than most planets of comparable size.
	Wild Storms	−5% Habitability −5% Happiness +20% Physics from Jobs		Yes	Spectacular electrical storms wrack this planet's atmosphere on a semi-regular basis.
	Atmospheric Aphrodisiac	+5% Habitability +10% Pop Growth speed −20% Government ethics attraction		Tomb World Machine World Hive world	Something in the air of this planet seems to put people in the mood to reproduce.
	Carbon World	+15% Minerals from Jobs	×0 if not Barren	No	This world has been formed mostly out of carbon, and contains little oxygen.
	Exceptional Quality Minerals	+25% Minerals from Jobs +8 Max Mining Districts	×8 if  High Gravity ×0 if  Carbon World	No	The exceptional quality of the minerals in this planet's crust provides a truly staggering opportunity for mining.
	Extensive Moon System	+10% Minerals from Jobs +1 Max Mining Districts	×0 if not Gas Giant ×0 if no moons	No	This gas giant has an unusually large amount of natural satellites. Hundreds of small moons and moonlets orbit the planet.
	High Quality Minerals	+15% Minerals from Jobs +4 Max Mining Districts	×4 if  High Gravity ×0 if  Carbon World	No	An abundance of high quality minerals in this planet's crust makes mining here a lucrative business.
	Lush	+10% Habitability +20% Food from Jobs +4 Max Agriculture Districts	×3 if Gaia ×2 if  Low Gravity ×0 if  Bleak	Tomb World Machine World Hive world	Life thrives here, the fauna is plentiful and the flora grows rapidly.
	Natural Beauty	+5% Happiness +25% Migration Pull	×3 if Gaia	Tomb World Machine World Hive world	The scenery on this planet is simply beautiful, anyone living on this planet will be constantly finding new wonders to behold.

Terraforming candidates

Terraforming Candidates are modifiers that have a small chance to appear on uninhabitable planets and are always added to worlds ruined by a crisis. The modifiers allow the planet to be terraformed if the  Climate Restoration technology has been researched. They do not appear if the required expansion is not installed. The chance for the a planet to have the modifier is scaled by the Habitable Worlds game setting.

	Modifier	Planet	Chance	Required AP	Description	DLC
	Terraforming Candidate	Barren	1%	—	Though barren and devoid of life, this planet has water in frozen form and may once have been home to a thriving ecosystem. With the right technology, it could be terraformed into a habitable world.
	Frozen Terraforming Candidate	Frozen	1%	Hydrocentric	Though cold to the point of being unable to sustain life, the frozen water on this world could allow us to terraform it into a habitable world, if we can find the right method.
	Toxic Terraforming Candidate	Toxic	15%	Detox	Though the noxious gases on this world make it unfit for life, with enough effort they can be broken down into less lethal compounds, eventually allowing colonization.

Event triggering modifiers

The following random modifiers trigger an event roughly one year after the planet is colonized. The event can only trigger once per colony.

	Modifier	Effects	Spawn chance	Removed by terraforming	Event
	Irradiated	−10% Habitability −20% Happiness −50% Food from Jobs −6 Max Agriculture Districts +2 Max Mining Districts		Yes	Colony gains one of the following: 20% chance Ancient Bombardment Craters planetary feature 20% chance Ancient Battlefield planetary feature 20% chance Irradiated Ruins planetary feature 40% chance Uncertain History modifier
	Unstable Tectonics	−10% Habitability −5% Happiness +20% Engineering from Jobs	×4 if  High Gravity	No	Colony gains  −5% happiness for one year. There is a 66% chance for either the colony to gain a Deep Sinkhole blocker or for the empire to get 100-500  Minerals.
	Asteroid Impacts	−5% Habitability +5% Minerals from Jobs +2 Max Mining Districts		No	Colony gains  −5% happiness for five years as well as either  20 devastation or the Impact Crater planetary feature.
	Atmospheric Hallucinogen	+5% Biological and Lithoid Pop Happiness +10% Physics from Jobs −5% Worker job output		Tomb World  Machine World  Hive world	Empire gains a special project. Finishing it removes the modifier and has a 25% chance to add the Filtered Atmospheric Hallucinogen modifier with  +10% Happiness and +10% Physics from Jobs.
	Asteroid Belt	+10% Minerals from Jobs +3 Max Mining Districts	×0 if moon ×2 if  Low Gravity	No	Colony gains  +10% happiness for five years.
	Strong Magnetic Field	+5% Energy from Jobs +5% Physics from Jobs +2 Max Generator Districts	×2 if  High Gravity ×0 if  Weak Magnetic Field	No	Colony gains either +20% or −10%  Research from Jobs for five years as well as a special project. Finishing the special project adds the Magnetic Miracle modifier.
	Titanic Life	+25% Society from Jobs	×8 if  High Gravity ×0.5 if  Low Gravity ×0 if  Hostile Fauna	No	Empire gains a special project. Finishing it either allows the recruitment of Titanic Beast armies on the planet or have the colony invaded by 3 powerful armies. If the empire is  Xenophobe, it can choose to gain the Delicious Titans modifier instead of the special project.

Unique modifiers

Unique modifiers will always appear on certain predetermined planets and cannot be found anywhere else.

Modifier		Effects	Planet
	Holy World	−200 Opinion with the Holy Guardians if colonized +30 Opinion with the Holy Guardians if Consecrated Unique visual effect	Emerald Mausoleum Pristine Jewel Prophets Retreat Walled Garden
	Wenkwort Gardens	+20% Administrator Output +10% Researcher Output	Wenkwort Artem
	Paridayda	+10% Happiness +10% Unity from Jobs +20% Food from Jobs +25% Migration Pull	Paridayda
	Sea of Consciousness	+25% Habitability +10% Research from Jobs −25% Government Ethics Attraction −25% Planetary Build Speed	Living Planet
	Vultaum Homeworld	None* Associated orbital deposit:  10 Research	Vultaumar Prime
	Orbital Facility Debris	None* Associated orbital deposit:  10 Minerals (bugged as of 3.4.5)  5 Alloys	Vultaumar III
	Aerostat Mining Network	None* Associated orbital deposits:  10 Energy  5 Exotic Gases	Vultaumar IV
	Yuht Homeworld	None* Associated orbital deposit:  10 Research	Yuthaan Majoris
	Solar Collector Arrays	None* Associated orbital deposits:  10 Energy  5 Exotic Gases	Yuthaan V
	First League Capital	+10 Research	Fen Habbanis III
	Abandoned Mining Facilities	None* Associated orbital deposit:  10 Minerals	Fen Habbanis asteroid
	Maintenance Platform	None* Associated orbital deposit:  10 Energy	Fen Habbanis VI
	Irassian Homeworld	None* Associated orbital deposit:  10 Research	Irassia
	Former Anchorage	None* Associated orbital deposits:  10 Minerals (bugged as of 3.4.5)  5 Alloys	Irass III
	Energy Production Site	None* Associated orbital deposits:  10 Energy (bugged as of 3.4.5)  5 Exotic Gases	Irass VIII

Homeworld modifiers

Homeworld modifiers can only be added to the capital world of an empire by Origins when the game starts.

	Modifier	Effects	Origin	Description
	Prosperous Unification Lasts 20 years	+15% Happiness +25% Amenities +10% Resources from Jobs	Prosperous Unification	Since Unification Day the economy has been booming!
	Colonial Spirit	+10% Happiness +15% Amenities +15% Resources from Jobs +10% Habitability	Lost Colony	Determined to forge a new life on the frontier, the forefathers of this colony had an astounding work ethic which became a time-honored tradition.
	Ocean Paradise	+15% Happiness +10% Pop Growth Speed +5% Resources from Jobs	Ocean Paradise	Few worlds boast conditions so fortunate. At the top of this planet's food chain, there is bliss. Its rich, flourishing resources could potentially last an eternity - if properly managed.
	Lithoid Crater Also added when colonizing with Lithoid Meteorite	−50% Habitability	Calamitous Birth	This large crater is the result of a Lithoid-bearing meteorite slamming into the planet.

Doomsday

Empires that start with the  Doomsday origin start with a homeworld modifier that goes through 4 stages. Each stage lasts roughly 10 years and increases the effects of the previous stage. It also prevents revolts from taking place.

Stage	Job output	Habitability	Stability	Immigration pull	Emigration push	Description
I	+30%	−30%	−10	−50%	+100	This planet is doomed. It is tectonically unstable and will eventually explode.
II	+60%	−50%	−15
III	+90%	−70%	−20
IV	+120%	−90%	−30

Event modifiers

Event modifiers can only be added by events.

	Modifier	Effects	Event	Description	DLC
	Subterranean Civilization	+10% Society from Jobs	Seismic Disturbances (Establish Communications Special Project)	A subterranean alien civilization on this world enjoys a good relationship with the colonists on the surface, and both parties frequently engage in trade and cultural exchanges.
	Subterranean Cities	+3 Max Districts	Seismic Disturbances (Preemptive Strike Special Project)	A indigenous subterranean civilization that once lived on this world has been exterminated, and colonists are now free to expand into their abandoned underground cities.
	Ancient Terraforming	+20% Pop Growth Speed	Abandoned Terraforming Equipment (Resume Process Special Project)	Ancient terraforming techniques have turned this world into a lush paradise.
	Abandoned Terraforming Project	−20% Food from Jobs −10% Happiness	Abandoned Terraforming Equipment (Dismantle Equipment Special Project)	This world was partially terraformed thousands of years ago, but the process was interrupted for unknown reasons. The result is a highly unstable climate system and biosphere.
	Magnetic Miracle	+20% Research from Jobs	Magnetic Miracle (Investigate the Magnetic Mystery Special Project)	Somehow the Magnetic Field of this planet is interfering with our computers, but rather than a simple disruption it is actually making them more efficient!
	Filtered Atmospheric Hallucinogen	+10% Happiness +10% Physics from Jobs	Crackdown (Hallucinogen Removal Special Project)	The air of this planet once contained a natural hallucinogen. Now, with the aid of massive filters, the effect has been diluted. This has reduced the benefits it once gave, but has also eliminated the negatives.
	Uncertain History	+10% Research from jobs −10% Happiness	What happened here? (40% chance)	The people of this planet are troubled by not knowing what caused the disaster which befell it long ago, and are driven to try to find out.
	Delicious Titans	+6 Max Agriculture Districts +30% Food from Jobs +1 Titan Hunter Job +1 Titan Hunter Job per 20 Pops	Titanic Life  Xenophobe option	Harvesting the Titanic life for research data has had an unexplained side benefit: They taste great!
	Engineered Nature	+10 Amenities	Engineered Beauty	This planet has been engineered to provide both form and function to its inhabitants
	Intentionally Tidally Locked	−3 Max Agriculture Districts −3 Max Mining Districts	A Planetary Gambit	During the terraforming process, this world was intentionally left tidally locked to take advantage of the amount of energy that could potentially be gathered on the dayside.
	Second Home	+20% Habitability +50% Immigration Pull	Homeworld II	This planet bears an uncanny resemblance to its creator's homeworld.
	Paradise Made	+25% Unity from Jobs +50% Immigration Pull +50% Spiritualist Ethics Attraction +25% District Cost	Paradise is a Place	This planet was terraformed to look like its creators' promised land.
	Surviving Infrastructure	−25% District Cost	Surviving Infrastructure	There is still a significant amount of infrastructure left on this world, built by its original inhabitants before they destroyed themselves in a nuclear war. This will aid in the construction of new buildings.
	Tamed Nanite Swarm	−25% Building Cost −25% Planetary Build Speed +30% Engineering Research from Jobs	On the Origin of Nanites (Tame the Swarm special project)	A self-evolved nanite swarm was domesticated on this planet and now helps the colonists with their day-to-day life.
	Zen World	+3% Happiness −15% Upkeep from Jobs	Interpretation Signal (Pure, Dry Landscaping special project)	Vast ripples appear in the regolith here. Whatever their origin, they exude a calming influence.
	Machine Interface Museum	+5% Unity from Bio-Trophies	Geomagnetic Storm (Shield All Drones approach)	A specialized center where biological assistants can experience the thrill of doing meaningless tasks to feel useful.
	Loop Temple Visitor Center	+5% Happiness	The Loop Temple: Time and Stone	Cheery, efficient staff guided tours past primordial sigils bright under floodlights and marked with helpful plaques.
	Loop Temple Pilgrims' Way	+10% Happiness	The Loop Temple: Time and Stone  Spiritualist option	Once again, the basalt arches whisper with the hushing of feet and the echo of prayers.
	Wraith Infused Atmosphere	−25% Orbital Bombardment Damage	Spectral Wraith Leviathan Parade Opportunity (Ending the situation early)	This atmosphere has been infused by the natural energy of the Spectral Wraith, making orbital bombardment less effective.
	Superflare Shielding	+10% Unity from Jobs	Superflare (Superflare Shielding special project)	This planet's populace is shielded from the harmful effects of it's sun's superflare activity.
	C.A.R.E Interactive Interface	+10% Energy from Jobs	C.A.R.E. (Develop A Cure For The Ferrophage special project)	The ancient C.A.R.E Interactive Interface is working at full capacity on this planet - with some modern improvements, of course.
	Colonial Remains	−25% Building Cost −25% District Cost	Colonizing Guaranteed Habitable Worlds ( Remnants Origin)	Some remnants of our former colony remain. Using them as a base will make it easier to re-colonize this planet.
	All Seeing Shard	+10 Planet Sensor Range +10 Planet Hyperlane Detection Range	Shard Leviathan Parade Opportunity (Ending the situation early)	By the unholy fusion of machine and xeno-biology, the starbase in this system can reach far beyond what we normally would be able to.

Anomaly modifiers

Anomaly modifiers can only be added by random anomalies from the Distant Stars DLC. Anomalies from the base game can add modifiers as well but those do not have any effects.

	Modifier	Effects	Anomaly	Description
	Ancient Harvesters	+20% Food from Jobs	Peculiar Patterns	Ancient solar-powered harvesters assist in gathering the planet's crops
	Resonant Crystals	+33% Governing Ethics Attraction +10% Happiness	Resonant Crystals	The resonant crystals that line this planet's tectonic crust resonate at a medically therapeutic frequency for our species.
	Soothing Magnetism	+50% Unity from Jobs	Attractive Magnetism	This planet's magnetosphere resonates at a frequency very conductive to our neural network.
	Watery Grave	+33% Society from Jobs	Deep Tunnels	The ruins of an ancient arthropoid collective stretch from pole to pole on this planet, long-buried beneath its waves.
	Dead God	+200% Spiritualist Ethics Attraction	Silent Behemoth	The corpse of some gargantuan alien creature keeps silent vigil in orbit over this planet.
	Exofungus Infestation	−20% Planetary build speed −10% Habitability +33% Society From Jobs	Bizarre Blanket	An extremophilic exofungus spreads on this planet like a cancer, choking the terrain.
	Predatory Plants	−10% Habitability +10% Society From Jobs	Megaflora	Vicious megaflora dominates this planet's landscape, creating opportunities for research, but also dangerous obstacles for any inhabitants.¸

Archaeological site modifiers

Event modifiers can only be added by Archaeological site outcomes.

	Modifier	Effects	Archaeology Site	Description
	The Memorex	+20% Resources from Jobs +10 Stability	Ix Belèn outcome	The Memorex Enhanced Learning Program trains the population to better fit the needs of the empire, as they sleep, improving their output significantly.
	The Sentinels	+10% Spiritualist Ethics Attraction +15% Unity from Jobs	The Sentinels "Leave them alone" outcome	Ancient guardians watch over the planet inspiring unity and spirituality in our people.
	Cheap Thrills	−10% Pop consumer goods upkeep +5% Happiness	The Sentinels "Purge and repurpose" outcome	The Evermore, originally a virtual realm in which the digitized consciousnesses of aliens lived in eternal bliss, has been repurposed into a playground for the masses.
	Cheap Thrills Evil	+10% Militarist Ethics Attraction +10% Xenophobe Ethics Attraction −10% Pop consumer goods upkeep +5% Happiness	The Sentinels "Virtual hunting ground" outcome	The Evermore, originally a virtual realm in which the digitized consciousnesses of aliens lived in eternal bliss, has been repurposed into a playground for the masses.
	The Evermore	+10% Research from Jobs	The Sentinels "Lab rats" outcome	In the Evermore paradise everyone is locked in a never-ending abstract board game centered on galactic domination through the accumulation of legumes. It makes for an endlessly dull, albeit informative, source of anthropological data.
	Ever More Joy	−10% Pop consumer goods upkeep +5% Happiness	Defeated and purged by the The Sentinels outcome	This world's population can live out their fantasies together with the digitized population in the Evermore paradise.
	Ever More Science	+10% Research from Jobs	Defeated and purged by the The Sentinels outcome	The digitized population residing within the Evermore have been assigned to assist with scientific research.

Unorganized planet modifiers

The following modifiers were found in the game files and are unorganized. The list is still being updated. There are over 370 planet modifiers, including decisions and previously identified modifiers, that were found within the game files. (WIP)

Modifier		Effects	Key code	Source(s)
	Annexation Fever	+30% Happiness	infiltration_happiness
	Chthonian Planet		chthonian_planet
	Migrating Forests	None	migrating_forests
	Docile Migrating Forests	−1 Max Districts	migrating_forests_2
	Dead Space Creatures	None	dead_creatures
	Starship Graveyard	None	starship_graveyard
	Organic Starship	None	organic_starship
	Abandoned Cities	None	abandoned_cities
	Subterranean Ocean	None	subterranean_ocean
	Fortified Enclaves	−30% Minerals from Jobs	colony_enclaves
	Alien Reservation	−10% Minerals from Jobs	primitive_reservation
	Atmospheric Ecosystem	None	atmospheric_ecosystem
	Asteroid Life Forms	None	asteroid_life
	Coprolite Asteroid	None	asteroid_coprolite
	Derelict Shipyard	None	derelict_shipyard
	Junkyard	None	junkyard
	Weapons Target Range	None	target_range
	Crashed Ore Freighter	None	ore_freighter
	Aerostat Colonies	None	aerostat_colonies
	Debris Field	None	debris_field
	Extreme Storms	None	extreme_storms
	Precious Moon	None	precious_moon
	Asteroid Collision	None	asteroid_collision
	Microsingularity	None	microsingularity
	Alien Writing	None	alien_writing
	Towed Asteroid	None	towed_asteroid
	Nuclear Devastation	None	nuclear_devastation
	Gamma-Ray Burst	None	gamma_ray
	Runaway Greenhouse Effect	None	greenhouse_effect
	Ammonia Biosphere	None	ammonia_biosphere
	Silicon Life Forms	None	silicon_lifeforms
	Colony Ruins	None	colony_ruins
	Alien Mural	None	alien_mural
	Damaged Ecology	−20% Happiness	damaged_ecology
	Forest Adaptation	+20% Happiness	friendly_trees
	Dathnak Capital	None	gas_giant_civ
	Dathnak Colony	None	gas_giant_colony
	Marauding Creature	−10% Happiness	mutant_stalker
	Wasteland Radiation	−10% Biological pop happiness −10% Lithoid pop happiness	wasteland_radiation
	Orbital Debris	+10% Building cost	wasteland_orbital_debris
	Upliftable Species	None	upliftable_species	Likely obsolete.
	Research Assistance	+10% Physics Research from Jobs +10% Society Research from Jobs +10% Engineering Research from Jobs	assist_research
	Ancient Automation	None	ancient_automation
	Ancient Factory	None	ancient_factory
	Robot Workers	None	robot_workers
	Ancient Forgeworld	None	ancient_forgeworld
	Ancient Orbital Weapon	None	ancient_weapon
	Recent Tectonic Event	−5% Happiness	recent_quake	Earthquake! colony event, triggered by the Unstable Tectonics modifier
	Comet sighted	+10% Happiness	recent_comet	Comet Sighted Through Belt colony event, triggered by the Asteroid Belt modifier
	Recent Impact	Removed colony event, formerly triggered by the Asteroid Impacts modifier −5% Happiness	recent_impact
	Magnetic Disruption	−5% Happiness −10% Physics Research from Jobs −10% Society Research from Jobs −10% Engineering Research from Jobs	magnetic_disruption	Magnetic Disruption colony event, triggered by the Strong Magnetic Field modifier
	Forest Fire	−20% Food from Jobs	forest_fire
	Nationalist Corruption	−10% Resources from jobs	nationalist_corruption
	Separatist Strikes	−40% Resources from jobs	planet_separatist_strikes
	Planet separatist supporter	−10% Happiness	planet_separatist_supporter
60px	Sector separatist supporter	−10% Happiness	sector_separatist_supporter
	Increased Temperature	−25% Happiness −25% Habitability	stellarite_high_temp
	Lowered Temperature	−25% Happiness −25% Habitability	stellarite_low_temp
	Land Appropriated	+100% Migration Pull	land_appropriation	Land appropriation
	Moving Islands	−10% Housing +15% Society Research from Jobs	turtle_world_modifier	Unsteady Ground colony event chain
	On the Backs of Nemma	−10% Housing +15% Society Research from Jobs +15% Happiness	turtle_world_modifier_alone	Unsteady Ground colony event chain
	Enslaved Nemmas	−10% Housing +15% Society Research from Jobs −10% Building cost −10% District cost	turtle_world_slaves_modifier	Unsteady Ground colony event chain
	Synth Paranoia	−20 Stability	synth_planet_paranoia	Contingency crisis event crisis.2093 (20 years)
	Inter-dimensional Trade	None* (Causes portal researchers to produce trade value.)	dportal_trade_normal	The Doorway colony event chain
	Reduced Inter-dimensional Trade	None* (Causes portal researchers to produce trade value.)	dportal_trade_low	The Doorway colony event chain
	Booming Inter-dimensional Trade	None* (Causes portal researchers to produce trade value.)	dportal_trade_high	The Doorway colony event chain
	Inter-dimensional Crisis	+25% Pop Growth speed	dportal_trade_crisis	The Doorway colony event chain
		custom_tooltip = flooded_habitat_tooltip −20% Habitability	flooded_habitat	Flood Habitat decision (Hydrocentric)
		custom_tooltip = instability_join_revolt_tooltip show_only_custom_tooltip = no −15 Stability	instability_join_revolt
	Inconvenient Space Elevator	−20% Minerals from Jobs	drone_space_elevator	Ancient Drones colony event chain, event colony.1503 (10 years)
	Drone Mineral Gift	None	drone_mineral_gift	Ancient Drones colony event chain, event colony.1504
	Crashed First League Satellite	None	drone_fl_satellite	Ancient Drones colony event chain, event colony.1505
	Rock Brain	None* (Adds orbital deposits that produce 2 society and 2 physics to the asteroid.)	rock_brain	Rock Brain anomaly event: anomaly.75
	Cunning Flora	None* (Event also adds a Savage Wildlands planetary feature.)	cunning_flora	Grassy Militia anomaly event: anomaly.91
	Fascinating Flora		fascinating_flora	Unused? Description refers to the Mharin Kharin colony event chain.
	Ancient Genetic Library	None* (Event also adds orbital deposits that produce 2 society and 2 engineering to the asteroid.)	old_genetic_library	Cell Cells anomaly event
	Zro Ice		zro_ice	Not used by the Zro Ice Anomaly_events_3#Below_Zro anomaly event.
	Dark Matter Funnel	None* (Event also adds an orbital deposit that produces 1 (76.2%), 2 (19%), or 3 (4.8%) Dark Matter.)	dark_matter_funnel	Illicit Matter anomaly event: anomaly.155
	Pheromoned, First Stage	+10% Happiness	pheromoned_1	Mharin Kharin colony event chain: colony.1521
	Pheromoned, Second Stage	−15% Resources from jobs	pheromoned_2	Mharin Kharin colony event chain: colony.1522
	Pheromoned, Workaround	+10% Resources from jobs	depheromoned_1	Mharin Kharin colony event chain: colony.1523
	Pheromoned, Third Stage	(unrecognized string “planet_migration_all_mult” for Template:Icon) −75% planet_migration_all_mult	pheromoned_3	Mharin Kharin colony event chain: colony.1524
	Pheromoned, Fourth Stage	+5% Resources from jobs −10% Happiness	pheromoned_4	Mharin Kharin colony event chain: colony.1525
	Pheromone Detox		pheromoned_detox	Mharin Kharin colony event chain: colony.
	Rocky Start	−5% Minerals from Jobs	uplift_rocky	A Rocky Start uplifting event: uplift.7010 (2 years)
	Unhappy With Experiments	−15% Happiness	unhappy_with_experiments	In Vivo uplifting event: uplift.7510 (2 years)
	Unproductive Without Experiments	−20% Society Research from Jobs	unproductive_without_experiments	In Vivo uplifting event: uplift.7510 (2 years)
	Projecting Moon	None* (Event also adds an orbital deposit that produces 3 Engineering research.)	projecting_moon	Moon Projected anomaly event: anomaly.191
	Unbalanced Ecosystem	−20% Food from Jobs	unbalanced_ecosystem	Wooden Hegemony anomaly event: added by anomaly.3055, removed by anomaly.3056/3057 (special project)
	Cornucopia	None* (Event also adds a Hyperfertile Valley planetary feature.)	cornucopia	Cornucopicturesque anomaly event
	Raw Materials	None* (Event also adds a Rich Mountain and a Submerged Ore Veins.)	raw_materials	Mineralistic anomaly event
	Shadow Play	None* (Event also adds an orbital deposit that produces 4 Society research.)	shadow_play	Swirling Shadows anomaly event
	Grimacing	None* (Event also adds an orbital deposit that produces 4 Physics research.)	grimacing	Grimacing anomaly event
	Comet Sighted	−5% Happiness	comet_sighted_negative	Comet Sighted event, if fanatic xenophobe or fanatic authoritarian (empire capital, 5 years)
	Comet Sighted	+5% Happiness	comet_sighted_positive	Comet Sighted event, if fanatic militarist, fanatic spiritualist, or fanatic egalitarian (empire capital, 5 years)
	Skid Marks	None* (Event also adds an orbital deposit that produces 6 Engineering research.)	skid_marks	Alien Drag Racing anomaly event
	Circuits in the Dust	None* (Event also adds an orbital deposit that produces 3 Engineering research.)	dust_circuits	Fender Bender anomaly event
	Unusual Tectonics	None* (Event also adds orbital deposits that produces 2 Engineering and 2 Physics research.)	unusual_tectonics	Unusual Tectonics anomaly event
	Congregating Robots	−10% Unity from Jobs	syndaw_congregating_robots	A Silent Congregation Machine Uprising situation random event (10 years)
	Acid Jungles	+20% Society Research from Jobs (Event also adds two Noxious Swamp planetary features.)	acid_jungles	Life Finds a Way anomaly event
	Hostile Environment	−30% Happiness (Event also an Ancient One planetary feature.)	hostile_environment	Echoes from the Deep anomaly event, if scientist has Meticulous or Spark of Genius
	Ex-Planet	None (Event also adds an orbital deposits that produces 3 Alloys.)	ex_planet	Fragments of Life anomaly event
	Starship Graveyard	None (Event also adds either an orbital deposits that produces 2 Alloys or a Metal Boneyards planetary feature.)	ship_graveyard	Leviathan Down anomaly event
	Crashed AI-Fleet	None (Event also adds an orbital deposits that produces 3 Engineering research.)	ai_fleet	The Servants of Sand anomaly event
	Irradiated Wasteland	None (Event also adds an orbital deposits that produces 3 Physics research and six Radioactive Wasteland blockers.)	irradiated_wasteland	Sins of a Sun anomaly event
	Ancient One		ancient_one	Possibly obsolete? Appears to have been replaced by the Ancient One planetary feature.
	Robotic Remains	None (Event also adds an orbital deposits that produces Engineering research.)	fallen_robots	The Fumes Lie Thick anomaly event: 6 engineering research Completing the The Machines Left Behind special project: 4 engineering research + Bomb Crater + City Ruins The option to enable this project is commented out
	Liquid Sands	+30% Physics Research from Jobs	liquid_sands
	Abandoned Mining Facility		abandoned_mining
	Responsible Gas Mining		gas_responsible_mining
	Rich Gas Deposits		gas_rich_planet
	Rich Gas Mining	+50% Energy from Jobs	gas_rich_planet_fo_realz
	Nutritious Food	+20% Pop Growth speed +10% Happiness	food_rich_planet
	Superior Sensor Array	(unrecognized string “planet_sensor_range_add” for Template:Icon) 4 planet_sensor_range_add (unrecognized string “planet_hyperlane_range_add” for Template:Icon) 6 planet_hyperlane_range_add	super_sensor_array
	Forced Animal Labor	−5% Building cost +5% Planetary Build Speed	horse_powered_factories_low
	Reluctant Animal Labor	−10% Building cost +10% Planetary Build Speed	horse_powered_factories_medium
	Willing Animal Labor	−15% Building cost +15% Planetary Build Speed −10% Food from Jobs	horse_powered_factories_high
	Dangerous Animal Life	−10% Happiness −20% Planetary Build Speed	hostile_animal_life
	Odd Animal Life	+25% Society Research from Jobs	society_animal_life
	Shifting Sands	−20% Habitability +33% Building cost	shifting_sands
	Suppressed Opposition	−15% Happiness	suppressed_opposition
	Scared Populace	−15% Happiness −15% Habitability	scared_population
	Safety Checked Alien Factory	+15% Building cost −25% Planetary Build Speed	secured_factory
	Iron Rule	−20% Happiness (unrecognized string “edicts_cost_mult” for Template:Icon) −25% edicts_cost_mult +25% Army Morale	fear_as_control
	Iron Rule	(unrecognized string “edicts_cost_mult” for Template:Icon) −25% edicts_cost_mult +25% Army Morale	fear_as_control_militarist
	Infectious Disease		infectious_disease
	The Skyborn War	−40% Happiness	pyramid_wars
		+100% Spiritualist Ethics Attraction	spiritualist_attraction
		+100% Materialist Ethics Attraction	materialist_attraction
	Automated Work Processes	−5% Happiness	syndaw_automated_work
	Robot Integration Tensions	−10% Monthly unity mult	syndaw_unfriendly_robots
	AI Failure	−10% Society Research from Jobs	syndaw_research_malus
	Celebrating Idyllic Transformation	+10% Happiness +50% Migration Pull	celebrate_idyllic_bloom
	Nanite Swarm	−200% Habitability −100% Happiness	nanite_swarm_modifier
	Local Mycelial Network	−25 Crime	fumongus_monitor_pops
	Perfect Organization	+10% Resources from jobs +20% Max Districts −50% Happiness	perfect_organization_modifier
	Imperfect Organization	+5% Resources from jobs	imperfect_organization_modifier
	Patron of the Arts	+10% Monthly unity mult	enclave_artist_patron
	Organized Panic	−20% Happiness −10% Energy from Jobs	enclave_artist_festival_outrage
	The Mirror of Knowledge		black_hole_pantagruel
	Pulse Germination		germinating_wraith
	Festival of Worlds	+15% Happiness +10% Pop Growth speed	enclave_artist_festival
	Forlorn Ruins	−5% Happiness	waiting_world_ruins
	Quarantined	−200% Habitability	worm_quarantined
	Shroud-Marked		covenant_shroud_marked
	Terror Victims	−33% Government Ethics Attraction	minor_terrorist_action
	Terror Victims (Severe)	−75% Government Ethics Attraction	major_terrorist_action
	Valiant Citizens	+33% Government Ethics Attraction	riots_averted
	Unrest (Spiritualist Attraction)	+100% Spiritualist Ethics Attraction	spiritualist_unrest
	Unrest (Authoritarian Attraction)	+100% Authoritarian Ethics Attraction	authoritarian_unrest
	Unrest (Xenophobe Attraction)	+100% Xenophobe Ethics Attraction	xenophobe_unrest
	Unrest (Materialist Attraction)	+100% Materialist Ethics Attraction	materialist_unrest
	Unrest (Xenophile Attraction)	+100% Xenophile Ethics Attraction	xenophile_unrest
	Unrest (Egalitarian Attraction)	+100% Egalitarian Ethics Attraction	egalitarian_unrest
	Unrest (Pacifist Attraction)	+100% Pacifist Ethics Attraction	pacifist_unrest
	Unrest (Militarist Attraction)	+100% Militarist Ethics Attraction	militarist_unrest
	Slaves Radicalizing	−20 Stability	adding_unrest_slaves
	Slave Revolt Suppressed	+20 Stability	revolt_suppressed
	Revolt Suppressed	+20 Stability	revolt_suppressed_2
	Hunger Strike	(unrecognized string “planet_jobs_slave_produces_mult” for Template:Icon) −50% planet_jobs_slave_produces_mult (unrecognized string “pop_category_slave_upkeep_mult” for Template:Icon) −50% pop_category_slave_upkeep_mult	slave_hunger_strike
	Slave Riots	(unrecognized string “planet_jobs_slave_produces_mult” for Template:Icon) −10 planet_jobs_slave_produces_mult −50% Pop Growth speed (unrecognized string “planet_army_build_speed_mult” for Template:Icon) −50% planet_army_build_speed_mult −50% Planetary Build Speed	slave_riots
	Free at Last	+20 Stability	slaves_defected
	Free at Last	+20 Stability	free_at_last
	Free at Last	+20 Stability	insurgents_free
	Nobody's Safe	−50 Stability	pop_disappearances
	<span class="explain" title="The population of this world is rioting as a result of madness brought on by the Whisperers in the Void.">Shroud-Madnes	−30 Stability	whisperers_madness
	<span class="explain" title="This planet is in complete anarchy as a result of madness brought on by the Whisperers in the Void.">Shroud-Psychosis	−100 Stability	whisperers_psychosis
	Shroud-Eaten Population	−20% Happiness	eater_unhappiness_planet_1
	Shroud-Eaten Population	−40% Happiness	eater_unhappiness_planet_2
		−100% Government Ethics Attraction	instrument_deviance_planet
		+2 Max Districts	master_builders_habitats
		+999% Spiritualist Ethics Attraction	god_rayed
		−30% Habitability	neutron_bombarded
		−20% Happiness	uneasy_faith
			holy_player_planet
			frozen_in_time
			superflare_star
			superflare_planet
		−10% Habitability −15% Energy from Jobs	superflare_struck
			black_hole_hologram
			black_hole_energy
			primitive_robots
		−50% Society Research from Jobs	researcher_rage
			clones_in_cryo
			dead_god
		+200% Spiritualist Ethics Attraction	dead_god_planet_hidden
			life_electric
		−20 Stability	brainslug_woes
		−40 Stability	brainslug_woes_phobe
		−20 Stability	brainslug_hive
		−50% Planetary Build Speed	phaseshifted
			building_blocks
			nanite_network
		+10% Happiness +10% Unity from Jobs +20% Food from Jobs +25% Migration Pull	paradise_planet
		−10% Habitability −5% Happiness −20% Pop Growth speed +20% Society Research from Jobs	seismological_phenomena
		−20% Habitability −15% Happiness −20% Pop Growth speed +20% Society Research from Jobs	seismological_phenomena_2
		−5% Habitability −5% Happiness +20% Society Research from Jobs	egg_rifts
	Alien Studies	+30% Physics Research from Jobs +30% Society Research from Jobs +30% Engineering Research from Jobs	enigmatic_cache_in_orbit
		+10% Housing	bunkbeds_deployed
		(unrecognized string “planet_pops_organics_food_upkeep_mult” for Template:Icon) −10% planet_pops_organics_food_upkeep_mult	tupperware_deployed
		+30% Migration Pull +10% Pop growth from immigration	atmospheric_deodorizer_deployed
			racket_energy_extractor
		(unrecognized string “planet_technician_energy_produces_mult” for Template:Icon) +25% planet_technician_energy_produces_mult	racket_generator_regulator
		−20% Energy from Jobs	contingency_sabotage
		15 Crime (unrecognized string “job_criminal_add” for Template:Icon) 1 job_criminal_add (unrecognized string “job_criminal_per_crime” for Template:Icon) 0.03 job_criminal_per_crime	criminal_underworld
		+15 Deviancy (unrecognized string “job_deviant_drone_add” for Template:Icon) 1 job_deviant_drone_add (unrecognized string “job_deviant_drone_per_crime” for Template:Icon) 0.03 job_deviant_drone_per_crime	drone_deviancy
		+15 Deviancy (unrecognized string “job_corrupt_drone_add” for Template:Icon) 1 job_corrupt_drone_add (unrecognized string “job_corrupt_drone_per_crime” for Template:Icon) 0.03 job_corrupt_drone_per_crime	drone_corruption
		30 Crime (unrecognized string “job_criminal_add” for Template:Icon) 3 job_criminal_add	gang_wars
		30 Crime (unrecognized string “job_criminal_add” for Template:Icon) 3 job_criminal_add	center_of_drug_trade
		30 Crime (unrecognized string “job_criminal_add” for Template:Icon) 3 job_criminal_add	mob_rule
		−20 Stability	bribed_officials
		−20% Resources from jobs	substance_abuse
		−20% Trade Value	smuggler_activity
		30 Crime	crime_wave
		−20% Trade Value	travel_advisory
		−20 Stability	cartel_war
		−20% Resources from jobs	protection_racket
		−20 Stability	corrupt_administration
		−20% Trade Value	trade_pilfering
		−30 Crime	crime_boss_arrested
		−30 Stability	deviant_interference
		−30 Stability	drone_signal_interference
		−30 Crime	ringleader_killed
		−30 Crime	corrupt_network_terminated
		(unrecognized string “show_only_custom_tooltip” for Template:Icon) no show_only_custom_tooltip (unrecognized string “custom_tooltip” for Template:Icon) anticrime_campaign_tooltip custom_tooltip	anticrime_campaign
		+10 Stability +50% Crime (unrecognized string “job_criminal_add” for Template:Icon) 2 job_criminal_add (unrecognized string “job_criminal_per_crime” for Template:Icon) 0.03 job_criminal_per_crime	crime_lord_deal
		−10 Stability (unrecognized string “job_criminal_per_crime” for Template:Icon) 0.03 job_criminal_per_crime	crime_lord_deal_broken
		(unrecognized string “planet_pops_unemployed_consumer_goods_upkeep_add” for Template:Icon) 2 planet_pops_unemployed_consumer_goods_upkeep_add	unemployment_benefits
		(unrecognized string “custom_tooltip” for Template:Icon) activity_program_tooltip custom_tooltip	activity_program
		(unrecognized string “unemployment_resources_energy_upkeep_add” for Template:Icon) 2 unemployment_resources_energy_upkeep_add (unrecognized string “custom_tooltip” for Template:Icon) standby_mode_tooltip custom_tooltip	standby_mode
		(unrecognized string “planet_pops_robotics_upkeep_mult” for Template:Icon) −10% planet_pops_robotics_upkeep_mult	numistic_magnetostrips
		−33% Resources from jobs −20 Stability (unrecognized string “species_empire_size_mult” for Template:Icon) −50% species_empire_size_mult	planet_culture_shock
		+10% Pop Growth speed −10% Happiness −5 Stability	tissue_growth_stimulants
		(unrecognized string “pop_housing_usage_mult” for Template:Icon) −10% pop_housing_usage_mult	explosive_fungifoam_housing
	Artifact Exhibition	(unrecognized string “planet_culture_workers_produces_mult” for Template:Icon) +20% planet_culture_workers_produces_mult	planet_museum_exhibits
	Performance Competition	(unrecognized string “planet_executives_produces_mult” for Template:Icon) +10% planet_executives_produces_mult (unrecognized string “planet_managers_produces_mult” for Template:Icon) +10% planet_managers_produces_mult	planet_manager_awards
	Artifact Exhibition	(unrecognized string “planet_bio_trophies_produces_mult” for Template:Icon) +10% planet_bio_trophies_produces_mult	planet_sanctuary_exhibits
	Artifact Relays	(unrecognized string “custom_tooltip” for Template:Icon) decision_artifact_relays_hivemind_effect custom_tooltip (unrecognized string “planet_jobs_simple_drone_produces_mult” for Template:Icon) 0 planet_jobs_simple_drone_produces_mult	planet_artifact_relays_hivemind
		(unrecognized string “custom_tooltip” for Template:Icon) decision_artifact_relays_machine_effect custom_tooltip (unrecognized string “planet_jobs_simple_drone_produces_mult” for Template:Icon) 0 planet_jobs_simple_drone_produces_mult	planet_artifact_relays_machine
		−50% Minerals from Jobs	lithoids_arc_site_minerals
		+10 Stability −15 Deviancy	oracle_software_integration
		+10% Habitability	pm_yuht_cleansing
	Loud Minority	10 Crime −10% Happiness +20% Pop Growth speed	feral_overload_00
	Rowdy Bunch	25 Crime −25% Happiness +35% Pop Growth speed	feral_overload_01
	The Lesser Evil	−5% Happiness +20% Pop Growth speed	feral_overload_02
			ancient_glassed_planet
		(unrecognized string “show_only_custom_tooltip” for Template:Icon) yes show_only_custom_tooltip (unrecognized string “custom_tooltip” for Template:Icon) pm_extradimensional_experimentation_tooltip custom_tooltip	pm_extradimensional_experimentation
		−50% Planetary Build Speed −25% Resources from jobs (unrecognized string “planet_jobs_upkeep_mult” for Template:Icon) +10% planet_jobs_upkeep_mult −5 Stability	no_lifetree
		−50% Habitability	lithoid_crater
			doomsday_1
		−30% Habitability (unrecognized string “planet_jobs_alloys_produces_mult” for Template:Icon) +30% planet_jobs_alloys_produces_mult +30% Minerals from Jobs +30% Energy from Jobs −10 Stability −50% Migration Pull (unrecognized string “planet_emigration_push_add” for Template:Icon) 100 planet_emigration_push_add	doomsday_2
		−50% Habitability (unrecognized string “planet_jobs_alloys_produces_mult” for Template:Icon) +60% planet_jobs_alloys_produces_mult +60% Minerals from Jobs +60% Energy from Jobs −15 Stability −50% Migration Pull (unrecognized string “planet_emigration_push_add” for Template:Icon) 100 planet_emigration_push_add	doomsday_3
		−70% Habitability (unrecognized string “planet_jobs_alloys_produces_mult” for Template:Icon) +90% planet_jobs_alloys_produces_mult +90% Minerals from Jobs +90% Energy from Jobs −20 Stability −50% Migration Pull (unrecognized string “planet_emigration_push_add” for Template:Icon) 100 planet_emigration_push_add	doomsday_4
		−90% Habitability (unrecognized string “planet_jobs_alloys_produces_mult” for Template:Icon) 1.2% planet_jobs_alloys_produces_mult 1.2% Minerals from Jobs 1.2% Energy from Jobs −30 Stability −50% Migration Pull (unrecognized string “planet_emigration_push_add” for Template:Icon) 100 planet_emigration_push_add	doomsday_5
		+15% Happiness +25% Planet Amenities +10% Resources from jobs	prosp_uni_mod
		+25% Planet Amenities +10% Resources from jobs	prosp_uni_mod_gestalt
		+10% Happiness +15% Planet Amenities +15% Resources from jobs +10% Habitability	colonial_spirit_mod
		(unrecognized string “pop_citizen_happiness” for Template:Icon) +10% pop_citizen_happiness +20% Planet Amenities	dancing_fad
		−50% Pop Growth speed −50% Pop growth from immigration −15% Happiness	dancing_to_death_modifier
		+20% Happiness (unrecognized string “planet_jobs_specialist_produces_mult” for Template:Icon) −30% planet_jobs_specialist_produces_mult	planet_manifesti_joy
	Planet Uslurp	−10 Stability +20% Society Research from Jobs	planet_manifesti_uslurp_mod
	Speaking Uslurp	+10% Happiness	manifesti_uslurp_mod
		(unrecognized string “country_society_research_produces_mult” for Template:Icon) +15% country_society_research_produces_mult	manifesti_reflections_mod
		(unrecognized string “country_society_research_produces_mult” for Template:Icon) +10% country_society_research_produces_mult (unrecognized string “pop_ethics_shift_speed_mult” for Template:Icon) +100% pop_ethics_shift_speed_mult	manifesti_sweet_dreams_mod
	A Helping Hand	−20% Building cost −20% District cost	the_lonely_bot_welcome
	Crystalline Architecture	+8 planet_housing_add −10% Building cost	crystalline_architecture_mod
	<span class="explain" title="There are not enough Ancient Clone Vat buildings here to sustain the current population.">Insufficient Ancient Clone Vats	+100% Pop Decline Speed	modifier_clone_pops_decline
	Ice Mined Planet	(unrecognized string “station_gatherers_produces_mult” for Template:Icon) −25% station_gatherers_produces_mult	ice_mined_planet
		+15% Happiness +10% Pop Growth speed +5% Resources from jobs	ocean_paradise
			market_nominee_level_1
			market_nominee_level_2
			market_nominee_level_3
			market_nominee_level_4
			market_nominee_level_5
			pm_study_the_sea
	Mastery of Nature	+2 Max Districts	mastery_of_nature
		+15% Planet Amenities +15% Migration Pull	resort_colony_other_planets
		+20% Pop Growth speed	species_crossbreeding
		+10% Energy from Jobs (unrecognized string “job_technician_drone_add” for Template:Icon) 1 job_technician_drone_add	divine_algorithm
		15 Crime	criminal_gambling
		−5 Stability	festival_aftermath
		+15% Trade Value	slot_machine_bounty
		(unrecognized string “planet_jobs_alloys_produces_mult” for Template:Icon) +10% planet_jobs_alloys_produces_mult	heavy_metal
		(unrecognized string “planet_jobs_alloys_produces_mult” for Template:Icon) +10% planet_jobs_alloys_produces_mult	alloy_relic
		+10% Minerals from Jobs	minerals_relic
		+10% Energy from Jobs	energy_relic
		+15% Planet Amenities +50% Migration Pull	artist_monument_erected
		+10 Stability +10% Pop Growth speed +5% Resources from jobs	ocean_paradise_hive

Game concepts