Archaeological site

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Please help with verifying or updating older sections of this article. At least some were last verified for version 3.3.

This article is for the PC version of Stellaris only.
Archaeological Site

Throughout the galaxy are scattered Archaeology map icon.png Archaeological Sites, areas where remains of ancient civilizations have been preserved relatively intact. They can be discovered while surveying, generated at game start, or uncovered a few years after a planet is colonized.

Mechanics[edit | edit source]

Most archaeological sites are revealed by surveying, with a 1.23% chance of creating a site, if the celestial body can support one. If a site is created this way, the chance is reduced to 0.25% for 5 years. Unlike anomalies, each time a celestial body is surveyed, a archaeological site can be created. Some archaeological sites are specifically created by anomalies, origins, special projects, other archaeological sites, or events. Most archaeological sites are visible to all empires once discovered, while a few are visible only to the discovering empire. The presence of an archaeological site is visible both in the system and galaxy view with this icon: Archaeology map icon.png. If a system contains more than one archaeological site, clicking the icon on the galaxy view will cycle through the sites.

An archaeological site can have 1-6 Chapters in addition to an introduction chapter. Each chapter has its own narrative and rewards and has to be unlocked before it becomes visible. Chapters are unlocked via Excavation. As long as an archaeological site is within an empire's borders, that empire can task a Science Ship with an assigned scientist to excavate the site. Excavation proceeds in phases, each taking Time 90 days. This time is affected by the following:

Time Excavation Speed Source Modifier
Ancient Relics.png Leader trait archaeologist.png Archaeologist +25%
Leader trait percussive maintenance.png Percussive Maintainer +10%
Leader trait traumatized.png Traumatized −30%
Regular AI empires −50%

At the end of each phase, a die is rolled, resulting in a random number from 1 to 10; adding the current number of clues and the Scientist's archaeology skill (see table below) and subtracting the chapter's difficulty gives the total result, as in the following formula: .

Archaeology Skill Source Bonus
Per Scientist.png Scientist level +1
Leader trait psionic leader.png Psychic +1
Leader trait psionic chosen one.png Chosen One +2
Ancient Relics.png Tech archeology lab.png Curator Archaeology Lab +2

A result of 14 or greater completes the current chapter; a result of 11-13 adds 2 clues for the next phase, a result of 6-10 adds 1 clue, a result of 5 or less adds no clues and can trigger various events, depending on the archaeological site and chapter.

Excavation can be paused and resumed at any time with no penalty. If the system with the archaeological site is gained by another empire, that empire can continue the excavation from the current chapter, but does not gain any rewards from already completed chapters.

Base game sites[edit | edit source]

The following sites do not require any DLC to be enabled.

Site Chapter 1 rewards Chapter 2 rewards Chapter 3 rewards Chapter 4 rewards Chapter 5 rewards Requirements
Ancient Battle Site
Evt landing ship.png
Minor artifacts.png 1-5 Minor artifacts
Society Research.png 18x Society output (350 ~ 100000)
Minor artifacts.png 6-10 Minor artifacts
75% chance
Menu icon technology.png Random Tier 2 Technology[1]
25% chance
Society Research.png 48x Society output (1000 ~ 1000000)
No.png No.png No.png Uninhabitable planet
Strange Asteroid
Evt asteroid field.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 6-10 Minor artifacts
75% chance
Menu icon technology.png Random Tier 2 Technology[1]
25% chance
Society Research.png 48x Society output (1000 ~ 1000000)
No.png No.png No.png Planet asteroid.png Asteroid
City of Bones
Evt relic world street.png
Minor artifacts.png 5 Minor artifacts Minor artifacts.png 5 Minor artifacts

No.pngAuth machine intelligence.png Empire Rewards

Yes.pngAuth machine intelligence.png Empire Rewards

No.png No.png Planet gaia.png Gaia or Dry planet
Frozen Complex
Evt frozen planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 2 outcomes:
  • Society Research.png 24x Society output (500 ~ 1000000)
  • Plasma Accelerators Plasma Accelerators technology progress[2]
No.png No.png Planet frozen.png Frozen
Mutant Fossils
Evt scanning remains.png
Minor artifacts.png 5 Minor artifacts Minor artifacts.png 5 Minor artifacts D metal boneyard.png Mutation Vats Planetary Feature No.png No.png Planet nuked.png Tomb
Ruins
Evt dead city.png
Minor artifacts.png 1-5 Minor artifacts
2 outcomes:
  • Society Research.png 24x Society output (500 ~ 1000000)
  • Engineering Research.png 24x Engineering output (500 ~ 1000000)
2 outcomes:
  • Society Research.png 24x Society output (500 ~ 1000000)
  • Engineering Research.png 24x Engineering output (500 ~ 1000000)
Minor artifacts.png 6-10 Minor artifacts
Society Research.png 24x Society output (500 ~ 1000000)
Adds lvl 3 anomaly "Alien Site" to a random body in the same system
No.png No.png Uninhabitable planet
Subterranean Hollows
Evt underground civilization.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Tech colonization 3.png Hostile Environment Adaptation technology[3] No.png No.png Habitable planet
The Endless Expanse
Evt frozen planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 10-30 Minor artifacts

choice of:

  • Feature.png Ix Belèn site location
  • Influence.png 500 Influence
No.png Planet frozen.png Frozen
Ix Belèn
Evt gas giant station.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts

choice of:

  • The Memorex modifier on capital
  • Alloys.png 3500 Alloys and Unity.png 2000 Unity
No.png Planet gas giant.png Gas Giant near The Endless Expanse
Desiccated
Evt warm barren planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts After 60 days choice of:
  • Mycelial Network and +20% Authoritarian.png Authoritarian Ethics Attraction for 20 years
  • Unity.png 48x Unity output (700 ~ 4000)
Orvall System
Seeds of Destruction
Evt frozen planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts

and Choice of:

No.png Crash Site anomaly outcome
Message in the Canopy
Tropical planet.png
Society Research.png 12x Society output (250 ~ 100000) Physics Research.png 12x Physics output (250 ~ 100000) Minor artifacts.png 1 Minor artifacts Choice of:
  • Proceed with caution
  • Uncover the source
    • Minor artifacts.png 1 Minor artifacts
    • Minerals.png 1000 Minerals
    • Rare crystals.png +200 Rare Crystals
No.png Message in the Canopy colony event
Message in a Bottle
Evt frozen planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts no rewards no rewards On Solar Sails Anomaly

Origin Sites[edit | edit source]

The following archaeological sites are generated by Origins.

From Gateway Sent[edit | edit source]

The From Gateway Sent archaeological site is discovered by investigating the special project created by the Origins gateway.png Galactic Doorstep Origin.

Chapter 1 2 3 4
Rewards Minor artifacts.png 1-5 Minor Artifacts Minor artifacts.png 1-5 Minor Artifacts Minor artifacts.png 1-5 Minor Artifacts
Physics Research 90-250 Physics Research
Minor artifacts.png 1-5 Minor Artifacts
Engineering research 120-350 Engineering Research

On the Shoulders of Giants sites[edit | edit source]

The Origins one the shoulders of giant.png On the Shoulders of Giants Origin adds a lengthy archaeological site chain in the empire home system. The narration of the last two chapters of the final site are random but the rewards are always the same.

Site Chapter 1 rewards Chapter 2 rewards Chapter 3 rewards Chapter 4 rewards
Ex Gravitas
Evt cold barren planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minerals.png 100-500 Minerals
  • Feature.png Something Waiting site location
Something Waiting
Evt ship in orbit.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Menu icon technology.png Random Technology
  • Feature.png Buried Deep site location
Buried Deep
Evt ship in orbit.png
Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Menu icon technology.png Random Technology
  • Feature.png In Memoriam site location
No.png No.png
In Memoriam
Evt ship in orbit.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Menu icon technology.png Random Technology
  • Feature.png The Last Stand site location
The Last Stand
Evt ship in orbit.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Menu icon technology.png Random Technology
  • Minor artifacts.png 1-5 Minor artifacts
  • Feature.png Dark Secret site location
Dark Secret
Evt cold barren planet.png
Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Minerals.png 24x Minerals output (350 ~ 10000)
  • Alloys.png 18x Alloys output (250 ~ 5000)
  • Exotic gases.png 18x 250-1500 Exotic Gases
Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Mod pop happiness.png Spurred by the Past
  • Feature.png Once the Mid-Game year is reached an event chain will trigger to unlock one of the next site
Benign Cover-Up
Evt cold barren planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts No.png
Bury The Hatchet
Evt cold barren planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts No.png

Quantum Catapult[edit | edit source]

The Origins slingshot to the stars.png Slingshot to the Stars Origin adds an archaeological site in the pulsar system where the ruined Quantum catapult is located.

Chapter 1 2 3 4 5 6
Rewards Engineering Research.png 12x Engineering output (250 ~ 100000) Engineering Research.png 12x Engineering output (250 ~ 100000) no rewards Engineering Research.png 12x Engineering output (250 ~ 100000) no rewards
  • Engineering Research.png 48x Engineering output (1000 ~ 1000000)
  • if finished before 2230
    • Infinity Beckons empire modifier for 10 years
      • +50% Megastructure build speed

Ancient Relics sites[edit | edit source]

The Ancient Relics DLC adds a large number of archaeological sites to the game.

Site Chapter 1 rewards Chapter 2 rewards Chapter 3 rewards Chapter 4 rewards Chapter 5 rewards Chapter 6 rewards Requirements
Ruined Star System
Evt tomb world.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Mod country terraform speed mult.png Shallarian Terraforming Knowledge No.png No.png Shallash System
Relic Rails
Evt archaeological dig.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 6-10 Minor artifacts
  • Research.png Research modifier for 15 years
No.png No.png Housing.png Housing building
Ruined World
Evt relic world.png
Minor artifacts.png 1-5 Minor artifacts 2 outcomes:
  • Society Research.png 18x Society output (350 ~ 100000)
  • Engineering Research.png 18x Engineering output (350 ~ 100000)
Minor artifacts.png 1-5 Minor artifacts R omnicodex.png Omnicodex relic No.png No.png Omni System
Asteroid Blast Door
Evt barren dig site.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 50, 75 or 100 Minor artifacts No.png No.png Planet asteroid.png Asteroid
Fossilized Remains
Evt archaeology camp.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts No.png Fossils Discovered colony event
Ancient Tomb
Evt excavation team.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Mid-Game
  • Uninhabitable planet
  • Holy Guardians exist
Moon Base
Evt barren dig site.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Feature.png Abandoned Ecumenopolis site spawns in system
No.png No.png No.png Shielded Relic system
Abandoned Ecumenopolis
Evt overgrown city.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts No.png No.png Finishing the Moon Base dig site
Gas Giant Structure
Evt gas giant station.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 6-10 Minor artifacts
  • Energy.png 4000 Energy
No.png No.png Planet gas giant.png Gas Giant
Robot Debris
Evt space debris.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 6-10 Minor artifacts
  • Engineering Research.png 96x Engineering output (2000 ~ 2000000)
No.png No.png No.png Planet asteroid.png Asteroid
Crashed Starship
Evt crashed station.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 10-30 Minor artifacts Uninhabitable planet
Moon Bump
Evt relic world street.png
Minor artifacts.png 1-5 Minor artifacts 3 outcomes: No.png No.png No.png No.png Uninhabitable planet
The Echoes Inside
Arid planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Society Research.png 48x Society output (1000 ~ 1000000) No.png No.png Planet barren.png Barren
Target from Orbit
Evt ship in orbit.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 3 outcomes:
  • Tech power plant 3.png Quantum Energy States[6]
  • Minerals.png 1000 Minerals
  • Tech society 2.png Xenobiology[7]
No.png No.png No.png Uninhabitable planet
Hole in the Ground
Evt big landing ship.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 3 outcomes:
  • Tech shields 4.png Advanced Shields tech[6]
  • Tech mining 2.png Deep Core Mining[8]
  • Tech alien life studies.png Xenology[7]
No.png No.png No.png Uninhabitable planet
Too Angled
Evt ship in orbit.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
10% chance
Tech mega art.png Mega Art Installation[7]
45% chance
Tech terrestrial sculpting.png Terrestrial Sculpting[9]
45% chance
Tech space mining 3.png Mineral Cutting Beams[10]
No.png No.png No.png Uninhabitable planet
Déjà Vu Dig
Evt archaeology camp.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 4 outcomes:
  • Tech physics 3.png Space-Time Theory[11]
  • Tech tb deep sinkhole.png Subterranean Colonization[12]
  • Tech tomb world adaption.png Tomb World Adaptation[13]
  • Archaeological loop
No.png No.png No.png Uninhabitable planet
Trench World
Tundra planet.png
Minor artifacts.png 1-5 Minor artifacts 3 outcomes: No.png No.png No.png No.png Planet barren.png Barren
Any Other Rock
Evt warm barren planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
66% chance
Unity.png Forced Mindfulness
33% chance
Volatile motes.pngExotic gases.pngRare crystals.png +200 of each strategic resource
No.png No.png Planet molten.png Molten
Beautiful Bubble
Evt big landing ship.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
66% chance
Society Research.png 48x Society output (1000 ~ 1000000)
33% chance
Energy.png Anthem of Aurora
No.png No.png No.png Uninhabitable planet
Get Inside
Evt alien ruins.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 3 outcomes:
  • Tech colonization 3.png Hostile Environment Adaptation[16]
  • Tech tb volcano.png Deep Crust Engineering[17]
  • If Gestalt consciousness.pngAuth hive mind.png then Tech unity of purpose.png Unity of Purpose[18] else Tech artificial moral codes.png Artificial Moral Codes[18]
No.png No.png No.png Uninhabitable planet
Anyone Home?
Evt overgrown city.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 3 outcomes:
  • Tech colonization 3.png Hostile Environment Adaptation[7]
  • Volatile motes.pngExotic gases.pngRare crystals.png +150 of each strategic resource and Society Research.png 48x Society output (1000 ~ 1000000)
  • Tech society 3.png Secrets of Life[7]
No.png No.png Uninhabitable planet
The Grand Herald
Evt ancient alien temple.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Menu icon fleet manager.png Titan (25-75% damaged)
Planet nuked.png Tomb, Planet desert.png Desert,
Planet arid.png Arid or Planet savannah.png Savanna
Beneath the Waves
Evt ship in orbit 2.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 3 outcomes:
  • Tech colonization 2.png Atmospheric Filtering[19]
  • Tech colonization 2.png Atmospheric Filtering[20]
  • Tech ecological adaptation.png Ecological Adaptation[7]
No.png No.png No.png Planet ocean.png Ocean
Get to the Bottom
Evt ship in orbit.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 3 outcomes:
  • Tech tb toxic kelp.png Ocean Ecology Management[21] and Engineering Research.png 48x Engineering output (1000 ~ 1000000)
  • Tech ecological adaptation.png Ecological Adaptation[10]
  • Tech terrestrial sculpting.png Terrestrial Sculpting[10]
No.png No.png No.png Planet ocean.png Ocean
Dotted Archipelago
Evt ocean planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 3 outcomes:
  • Exotic gases.png +250 Exotic gases
  • Tech vitality boosters.png Vitality Boosters[7]
  • Tech society 2.png Xenobiology[7]
No.png No.png No.png Planet ocean.png Ocean
Strange Flows
Evt glitchy matrix.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 3 outcomes:
  • Tech tb volcano.png Deep Crust Engineering[22]
  • Ion Disruptors Ion Disruptors[6]
  • Nano-Separators Nano-Separators[10]
No.png No.png No.png Planet molten.png Molten
Never Forget
Evt tomb world.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Mod pop happiness.png A Life Worthwhile No.png No.png No.png Hauer System
Message in the Dust
Evt ship in orbit.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts 3 outcomes
  • Minor artifacts.png 1-5 Minor artifacts
  • Menu icon fleet manager.png 1 Corvette
    (25-75% damaged)[23]
No.png Planet nuked.png Tomb, Planet desert.png Desert,
Planet arid.png Arid or Planet savannah.png Savanna
Whispers in the Stone
Evt hidden door.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts No.png District mining.png Mining District
Kleptomaniac Rats
Evt relic world.png
Minor artifacts.png 6-10 Minor artifacts Minor artifacts.png 6-10 Minor artifacts Minor artifacts.png 6-10 Minor artifacts Minor artifacts.png 6-10 Minor artifacts
  • Minor artifacts.png 10-30 Minor artifacts
  • Job purge.png Shard awakens
No.png Rubricator System spawned in by the Weapon Trails Anomaly
Hidden Worlds
Evt crashed station.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Choice of: No.png No.png 5% chance to trigger by clearing one of the following Tile Blocker.pngtile blockers on a colony
  • D lush jungle.png Dense Jungle
  • D toxic kelp.png Toxic Kelp
  • D deep sinkhole.png Deep Sinkhole
  • D quicksand basin.png Quicksand Basin
  • D noxious swamp.png Noxious Swamp
  • D massive glacier.png Massive Glacier
The Library
Evt archaeological dig.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Remnant of a Remnant event chain that leads to the nearest Curator station if uncontacted
  • Minor artifacts.png 10-30 Minor artifacts

and choice of:

No.png Planet barren.png Barren
Ruined Station
Evt space debris.png
Minor artifacts.png 1-5 Minor artifacts choice of:
  • Scientist gains Leader trait meticulous.png Meticulous[24]
  • Scientist gains Leader trait percussive maintenance.png Percussive Maintainer
Minor artifacts.png 1-5 Minor artifacts No.png No.png Neutron Star or Pulsar
One Last Hope
Evt ocean planet.png
Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 6-10 Minor artifacts

and 2 outcomes:

Polaris System
Weapons Cache
Evt tomb world.png
no rewards Minor artifacts.png 6-10 Minor artifacts Unique Text if Earth,

if Xenophobe.pngGestalt consciousness.png and No.pngCivic empath.pngCivic machine servitor.png

  • Alloys.png 150 - 2000 Alloys

if Xenophile.pngCivic empath.pngCivic machine servitor.png

  • Minor artifacts.png 6-10 Minor artifacts
  • 350 - 2000 Unity.png unity

Everyone Else

  • Minor artifacts.png 6-10 Minor artifacts
  • 250 - 1500 Unity.png unity
No.png No.png No.png Terraforming Event

Precursor sites[edit | edit source]

Precursor Archaeology Sites are visible only to the empire that starts the event chain and are used to advance the Baol and Zroni event chains. When a Zroni Archaeology Site is discovered, the planet will gain a deposit of 2-4 Zro.png Zro.

Precursor Site Chapter 1 rewards Chapter 2 rewards Chapter 3 rewards Chapter 4 rewards Chapter 5 rewards
Baol Grunur Ruins
Evt baol 1.png
Minor artifacts.png 5 Minor artifacts
  • Minor artifacts.png 5 Minor artifacts
  • Feature.png The Barren site location
No.png No.png No.png
The Barren
Evt warm barren planet.png
Minor artifacts.png 5 Minor artifacts Minor artifacts.png 5 Minor artifacts
  • Minor artifacts.png 5 Minor artifacts
  • Feature.png The Shattered site location
No.png No.png
The Shattered
Evt asteroid field.png
Minor artifacts.png 5 Minor artifacts Minor artifacts.png 5 Minor artifacts Minor artifacts.png 5 Minor artifacts
  • Minor artifacts.png 5 Minor artifacts
  • Feature.png The Silenced site location
No.png
The Silenced
Evt baol 5.png
Minor artifacts.png 5 Minor artifacts
  • Minor artifacts.png 6-10 Minor artifacts
  • Feature.png Grunur system location
No.png No.png No.png
Zroni Abandoned Colony Ruins
Evt overgrown city.png
Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Physics Research.png 18x Physics output (350 ~ 100000)
  • Minor artifacts.png 1-5 Minor artifacts
  • Tech psionic theory.png Psionic Theory technology if not researched or Gestalt consciousness.png Gestalt Consciousness
  • Society Research.png 48x Society output (1000 ~ 1000000) if researched or Gestalt consciousness.png Gestalt Consciousness
  • Feature.png Zroni Minor Colony site location
No.png No.png
Zroni Minor Colony
Evt overgrown city.png
  • Minor artifacts.png 1-5 Minor artifacts
  • Society Research.png 18x Society output (350 ~ 100000)
  • Minor artifacts.png 1-5 Minor artifacts
  • Feature.png Zroni Minor Colony site location
No.png No.png No.png
Zroni Minor Colony
Evt overgrown city.png
  • Minor artifacts.png 1-5 Minor artifacts
  • Minor artifacts.png 1-5 Minor artifacts
  • Feature.png Zroni Minor Colony site location
No.png No.png No.png
Zroni Minor Colony
Evt baol 2.png
  • Minor artifacts.png 1-5 Minor artifacts
  • Society Research.png 18x Society output (350 ~ 100000)
  • Minor artifacts.png 1-5 Minor artifacts
  • Feature.png Zroni Major Colony site location
No.png No.png No.png
Zroni Major Colony
Evt baol 2.png
  • Engineering Research.png 12x Engineering output (250 ~ 100000)
  • Society Research.png 18x Society output (350 ~ 100000)
  • Minor artifacts.png 1-5 Minor artifacts
  • Society Research.png 18x Society output (350 ~ 100000)
  • Minor artifacts.png 6-10 Minor artifacts
  • Feature.png Zron system location
No.png No.png
Zron
Evt shrouded planet.png
  • Minor artifacts.png 1-5 Minor artifacts
  • Zro.png 2 Zro
  • Minor artifacts.png 1-5 Minor artifacts
  • Society Research.png 18x Society output (350 ~ 100000)
  • Minor artifacts.png 1-5 Minor artifacts
  • Society Research.png 18x Society output (350 ~ 100000)
  • Minor artifacts.png 1-5 Minor artifacts
  • Society Research.png 24x Society output (500 ~ 1000000)
  • Zro.png 5 Zro
  • Minor artifacts.png 10-30 Minor artifacts
  • R zro crystal.png Psionic Archive relic

The Sentinels[edit | edit source]

The Sentinels is an Archaeology Site with slightly different mechanics. It can be discovered after a planet is colonized and adds an archaeological site blocker to the colony.

Site Chapter 1 Chapter 2 Chapter 3 Requirements
The Sentinels
Evt huge monument.png
Adds an
D archaeological dig.png Archaeological Site feature to the planet
  • Minor artifacts.png 1-5 Minor artifacts reward
  • Archaeologist Missing event after 60-90 days
    • Scientist leading the arc site dig goes missing
  • Minor artifacts.png 1-5 Minor artifacts reward
  • Missing Archaeologist event after 30-90 days
    • Choice to pay 100 Influence.png Influence and 500 Energy.png Energy to save the missing scientist with the Leader trait maimed.png Maimed trait after 10-40 days
    • Choice to not "waste time on deserters" to find scientist dead after 60-90 days
    • Choice to pay −3 Clues to save the missing scientist with the Leader trait maimed.png Maimed trait after 10-40 days
  • All choices also give +5 Clues to the archaeology site after finding the scientist

Minor artifacts.png 1-5 Minor artifacts reward
D archaeological dig.png Archaeological Site feature gets removed/replaced
and Choice of:
If No.pngXenophobe.pngFanatic Xenophobe.png:

  • Open the Sentinels carefully
Issue a special project to investigate the sentinels, when finished choose between:
? Hear them out: Talk to them and choose between:
+ Protection: D archaeological dig.png Sentinels feature and gain 9 or 8 defensive Sentinel armies depending on dialog choices
! Claim land: 9 Sentinel armies attack the colony
! Silence them: 9 Sentinel armies attack the colony
  • Leave the Sentinels alone
+ D archaeological dig.png Sentinels feature
+ Pm artist monument erected.png The Sentinels planet modifier

If No.pngXenophile.pngFanatic Xenophile.png:

  • Destroy the Sentinels
Issue a special project to destroy the sentinels:
! When finished 9 Sentinel armies attack the colony

Always an Option

  • Dismantle the statues and salvage the alloy
Acts the same as "Open the Sentinels carefully" option listed above
The illusion of choice
No.pngGestalt consciousness.png gestalt consciousness
5% chance to trigger by clearing one of the following Tile Blocker.pngtile blockers on a colony
  • D lush jungle.png Dense Jungle
  • D toxic kelp.png Toxic Kelp
  • D noxious swamp.png Noxious Swamp
  • D massive glacier.png Massive Glacier


If any of the outcomes comes to having the 9 Sentinel armies attacking the colony totaling 2350 garrison/army power here are the outcomes of the battle:

  • The Sentinels win and seize control of the colony
    The sentinels start purging owners pops
    The planet can be retaken and liberated from the Sentinels (see Sentinels defeated)
    If the pops get liberated before they get fully purged they revive a liberated 30% Mod pop happiness.png happiness boost for 10 years
    If the pops are left to be fully purged, the colony gets destroyed and the last pop will escape to a randomly owned planet. Reveals and enables the "Into the Earth" special project above the Sentinel planet. Choice of:
    Put their minds to work with some science: Receive the Pm glitchy matrix.png Ever More Science planet modifier on your Capital +10%Research.png
    Modify the Evermore to entertain the masses: Receive the Pm glitchy matrix.png Ever More Joy planet modifier on your Capital −10%Pop consumer goods upkeep +5%Mod pop happiness.png
  • The Sentinels are defeated (liberation also applys for this)
    Gain the D mineral fields.png Sentinels metal feature on the colony
    Defeating the Sentinels also reveals a tomb entrance and a Choice between:
    • Investigate the entrance Issues special project "Into the Earth". Once completed chose between:
      • Purge and repurpose: gain
        Influence.png 300 Influence
        Pm glitchy matrix.png Cheap Thrills planet modifier −10%Pop consumer goods upkeep +5%Mod pop happiness.png
      • Virtual hunting ground: If Militarist.pngFanatic Militarist.png or Xenophobe.pngFanatic Xenophobe.png gain:
        Influence.png 300 Influence
        Pm glitchy matrix.png Cheap Thrills Evil planet modifier +10%Militarist.png +10%Xenophobe.png −10%Pop consumer goods upkeep +5%Mod pop happiness.png
      • Replicate the technology: If No.pngMilitarist.pngFanatic Militarist.png and No.pngXenophobe.pngFanatic Xenophobe.png gain:
        Issue the "Replicate the Evermore" special project. gain the Pm glitchy matrix.png Cheap Thrills EMPIRE modifier −10%Pop consumer goods upkeep +5%Mod pop happiness.png
      • Lab rats:
        Gain the Pm glitchy matrix.png The Evermore planet modifier +10%Research.png
    • Seal the entrance
      Gain 150 Influence.png Influence and conclude the even chain

Other Expansion Sites[edit | edit source]

Certain archaeological sites require other DLC to be enabled.

The Broken Gates[edit | edit source]

The Broken Gates archaeological site can be discovered on any planet that's not a gas giant, asteroid or located in a black hole system.

Chapter 1 2 3 4
Rewards Minor artifacts.png 1-5 Minor Artifacts Minor artifacts.png 1-5 Minor Artifacts Minor artifacts.png 1-5 Minor Artifacts Minor artifacts.png 1-5 Minor Artifacts
Job purge.png The Elder One awakens

Chthonic Siren[edit | edit source]

A random world in the galaxy will contain the initially hidden Chthonic Siren archaeological site. If an empire is part of a Federation research.png Research Cooperative then fully excavating any archaeology site has a 10% chance to discover its existence. If the planet is already within borders then the archaeological site will be revealed, otherwise the empire will have to complete two special projects to discover its location.

Chapter 1 2 3 4
Rewards Minor artifacts.png 1-5 Minor Artifacts Minor artifacts.png 1-10 Minor Artifacts Minor artifacts.png 1-10 Minor Artifacts Minor artifacts.png 6-10 Minor Artifacts

Excavation events[edit | edit source]

At the end of an Excavation phase, if the result is not high enough to grant a Clue or finish the Chapter, then one of the following events may happen:

  • Science Ship Scientist dies, −2 Clues
  • Archaeology team members die, −1 Clues
  • A dangerous situation is avoided, +3 Clues
  • Choice to pay 100 Energy.png Energy to get +3 Clues or do nothing and get −2 Clues
  • Science Ship Scientist gains the Leader trait maimed.png Maimed trait


References[edit | edit source]

  1. 1.0 1.1 If the technology has already been researched then Gain Research.png 96x Research output (each potential yield gain of 2000 ~ 2000000) in the corresponding tech field Physics Research phy, Society research soc or Engineering research eng.
  2. Add this technology as research option with 30% progress.
  3. If this technology has already been researched then Gain Society Research.png 48x Society output (potential yield gain of 1000 ~ 1000000) else gain this technology.
  4. If this technology has already been researched then Gain Engineering Research.png 24x Engineering output (potential yield gain of 500 ~ 1000000) else if this technology is a research option then gain 50% progress else add this technology as research option with 10% progress.
  5. If all colonization technologies have been researched then Gain Society Research.png 24x Society output (potential yield gain of 500 ~ 1000000) else if this technology is a research option then gain 50% progress else add the next colonization technology as research option with 25% progress.
  6. 6.0 6.1 6.2 6.3 If this technology has already been researched then Gain Physics Research.png 48x Physics output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then gain 50% progress else add this technology as research option with 10% progress.
  7. 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 If this technology has already been researched then Gain Society Research.png 48x Society output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then gain 50% progress else add this technology as research option with 10% progress.
  8. If this technology has already been researched then gain Volatile motes.png 100 volatile motes else if this technology is a research option then gain 50% progress else add this technology as research option with 10% progress.
  9. If this technology has already been researched then gain Minerals.png 2000 minerals else if this technology is a research option then 50% progress else add this technology as research option with 10% progress.
  10. 10.0 10.1 10.2 10.3 10.4 If this technology has already been researched then Gain Engineering Research.png 48x Engineering output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then gain 50% progress else add this technology as research option with 10% progress.
  11. If this technology has already been researched then Gain Society Research.png 96x Society output (potential yield gain of 2000 ~ 2000000) else if this technology is a research option then 25% progress else add this technology as research option with 10% progress.
  12. If this technology has already been researched then Gain Engineering Research.png 96x Engineering output (potential yield gain of 2000 ~ 2000000) else gain this technology.
  13. If this technology has already been researched then Gain Engineering Research.png 96x Engineering output (potential yield gain of 2000 ~ 2000000) else if this technology is a research option then gain 50% progress else add this technology as research option with 10% progress.
  14. If this technology has already been researched then Gain Society Research.png 48x Society output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then it gain 25% progress else add this technology as research option.
  15. If this technology has already been researched then gain Alloys.png 500 alloys else if this technology is a research option then gain 50% progress else add this technology as research option with 25% progress.
  16. If this technology has already been researched then Gain Society Research.png 48x Society output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then gain 50% progress else add this technology as research option.
  17. If this technology has already been researched then Gain Physics Research.png 48x Physics output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then gain 50% progress Gain Physics Research.png 24x Physics output (potential yield gain of 500 ~ 1000000) else add this technology as research option and Gain Physics Research.png 24x Physics output (potential yield gain of 500 ~ 1000000).
  18. 18.0 18.1 If this technology has already been researched then Gain Society Research.png 48x Society output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then gain 25% progress else add this technology as research option with 10% progress.
  19. If this technology has already been researched then Gain Society Research.png 48x Society output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then gain 25% progress and Gain Society Research.png 24x Society output (potential yield gain of 500 ~ 1000000) else add this technology as research option with 10% progress and Gain Society Research.png 24x Society output (potential yield gain of 500 ~ 1000000).
  20. If this technology has already been researched then Gain Engineering Research.png 48x Engineering output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then gain 25% progress and Gain Engineering Research.png 24x Engineering output (potential yield gain of 500 ~ 1000000) else add this technology as research option with 10% progress and Gain Engineering Research.png 24x Engineering output (potential yield gain of 500 ~ 1000000).
  21. If this technology is a research option then gain 80% progress else add this technology as research option with 50% progress. No additional bonus for already possessing the tech.
  22. If this technology has already been researched then Gain Physics Research.png 48x Physics output (potential yield gain of 1000 ~ 1000000) else if this technology is a research option then gain 80% progress else add this technology as research option with 25% progress.
  23. Also adds a Special Project to repair the corvette damage.
  24. Not possible if scientist has Leader trait maniacal.png Maniacal or Leader trait carefree.png Carefree .
  25. If all colonization technologies have been researched or if Auth machine intelligence.png machine intelligence then Gain Society Research.png 96x Society output (potential yield gain of 2000 ~ 2000000) else add the next colonization technology as research option with 60% Tech colonization 2.png, 99% Tech colonization 3.png, 80% Tech colonization 4.png, 70% Tech colonization 5.png, 60% Tech tomb world adaption.png progress.
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