Diplomacy

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For the Diplomacy Diplomacy tradition tree, see Traditions page.

Version

Outliner top.png
This article has been verified for the current PC version (3.14) of the game.
Diplomacy between plantoids and arthropoids

Diplomacy comprises the actions and agreements that empires can take with and against each other. Most diplomatic actions and agreements are mutually beneficial.

Empires with the Pompous Purists Pompous Purists civic can send but not receive diplomatic propositions. This includes border access, so whether an empire has borders open or close towards them is decided solely by the Initial Border Status policy. It also means that if two empires have the civic they cannot conduct diplomacy with each other.

Envoys[edit | edit source]

Envoy.png Envoys are minor leaders that can be assigned to perform various diplomatic tasks. Once an envoy is assigned to a task, it cannot be reassigned again for a year. Envoys can be assigned to the following tasks:

  • Improve relations Improve Relations with another empire, which grants Diplomacy opinion.png +0.25 opinion per month to and from the target empire (up to +150) and removes the embassy requirement for certain diplomatic actions
  • Harm relations Harm Relations with another empire, which grants Diplomacy opinion.png −0.5 opinion per month to and from the target empire (up to −150) and removes the relation requirement for negative diplomatic actions
  • First contact, which establishes communications
  • Build a Spy Network, which increases Spy network.png infiltration in another empire over time and allows for operations to be conducted

Each Empire starts with 2 Envoys by default and can gain additional ones in the following ways:

Available envoys 0
Source Effect
Fanatic xenophile.png Fanatic Xenophile ethic +2
Diplomatic Corps Diplomatic Corps civic +2
Public Relations Specialists Public Relations Specialists civic +2
Empath Empath civic +2
Diplomatic Protocols Diplomatic Protocols +2
Shared Destiny Shared Destiny ascension perk +2
Grand Embassy Complex Grand Embassy Complex building +2
Orbital Embassy Complex Orbital Embassy Complex orbital ring building +2
Tech interstellar assembly.png Interstellar Assembly (Stage IV) +2
Xenophile.png Xenophile ethic +1
Origins broken shackles.png Broken Shackles origin +1
Pompous Purists Pompous Purists civic +1
Delegated Functions Delegated Functions civic +1
Spyware Directives Spyware Directives +1
Galactic Sovereign Galactic Sovereign / Corporate Sovereign civic +1
Embassy Complex Embassy Complex building +1
Sanctum of the Whisperers Sanctum of the Whisperers building +1
Politics Politics tradition tree adopted +1
Enmity Enmity tradition tree finished +1
The Federation The Federation tradition +1
Universal Compatibility Universal Compatibility tradition +1
Double Agents Double Agents tradition +1
Autonomous Agents Autonomous Agents technology +1
Tech collective self.png Embodied Dynamism technology +1
Tech interstellar assembly.png Interstellar Assembly (Stage II) +1
Federation perk president envoy.png Federal Envoys
  • Federation default.png Galactic Union president (Level 2)
  • Federation trade.png Trade League president (Level 2)
  • Federation hegemony.png Hegemony president (Level 2)
  • Federation military.png Martial Alliance president (Level 3)
  • Federation research.png Research Cooperative president (Level 4)
president perk
+1
Diplomatic Grants Diplomatic Grants edict +1
Bureau of Espionage Bureau of Espionage
Individualist Bureau of Espionage Bureau of Espionage
Auth hive mind.png Observation Instinct Observation Instinct
Auth machine intelligence.png Covert Analysis Algorithm Covert Analysis Algorithm
edict
+1
Unknown.png Open Society empire modifier +1
Unknown.png Reconverted Leader empire modifier +1
Alien TopographyCompact LivingTech predatory tactics.pngTech satisfying insults.pngTech xeno aesthetics.png Society insight technology (each) +0.5
Atmospheric Orbital MechanicsTech new numbers.pngTech trinary computing.pngTech unusual senses.png Physics insight technology (each) +0.25
Tech lost building methods.pngTech supreme alloy.pngTech temple of transportation.pngTech ordered retreat.png Society insight technology (each) +0.25
Inward Perfection Inward Perfection civic −1

Diplomatic status[edit | edit source]

See also: Diplomacy interface

The contact and diplomacy screens show a summary of an empire's diplomatic treaties and relations with other empires, as well as certain other relevant information such as their Menu icon policies.png diplomatic stance policy

The unilateral Diplomacy opinion.png opinion of an empire also influences whether an AI empire supports or opposes proposed resolutions in the Diplomacy restore community.png Galactic Community as well as their attitude towards an empire.

Trust[edit | edit source]

Trust cap source Trust cap
Base 50
Varies by agreement 75 or 100
Direct Diplomacy Direct Diplomacy tradition +50
Universal Compatibility Universal Compatibility tradition +50 with Auth machine intelligence.png
Federation default.png Galactic Union member (level 5)
Per Official.png official assigned to federation
+5
Trust growth modifier source Trust growth
Direct Diplomacy Direct Diplomacy tradition +33%
Federation default.png Galactic Union member (level 3)
Per Official.png official assigned to federation
+5%
Minor artifacts.png Management Insights application +10%
Menu icon edicts.png Master's Teachings: Diplomatic Trust edict +100%

Empires which engage in friendly diplomacy build Diplomacy trust.png trust over time. Each point of trust adds Diplomacy opinion.png +1 opinion and Intel.png +0.5 intel cap. The default Trust cap trust cap is 50. Certain diplomatic agreements increase this cap, with only the highest amount applying. Conversely, many diplomatic agreements require a certain amount of trust or relation level to be proposed.

Trust changes monthly based on the current diplomatic relationship between two empires. Most diplomatic agreements have a small amount of Trust growth trust growth, while Diplomacy rivalry.png rivalry and Diplomacy war.png war quickly decay any trust at −2 per month. If there are no active sources of trust growth, trust decays by −0.25 each month.

Modifiers for Trust growth trust growth and Trust cap trust cap can be found in the tables to the right.

Threat[edit | edit source]

Empires that conquer or subjugate other empires generate threat. This represents other nearby empire's concerns and fears of being conquered next. Each empire has a threat rating, and as it increases, surrounding empires gain a stacking negative opinion modifier towards the aggressor empire, while becoming increasingly friendly with a stacking positive opinion modifier towards other threatened empires. This makes empires with mutual threat more willing to form an alliance against an aggressive conqueror or crisis.

Threat is generated by:

  • Conquest:
    • 2 Conquered a system
    • 4 Conquered an upgraded starbase
    • 8 Conquered a colony
    • ×0.75 if wargoal is Claim
    • ×0.67 if wargoal is Counterattack
  • 0.5 Diplomacy isvassal.png Vassalize war victory or status quo with new empire created
  • 0.25 Diplomacy istributary.png Make Tributary or Diplomacy istributary.png Make Subsidiary war victory or status quo with new empire created
  • 0.1 Diplomacy force ideology.png Impose Ideology war victory or status quo with new empire created
  • 0.5 Diplomacy closed borders.png Take Galatron war victory
  • 0.5 Diplomacy isvassal.png Bring Into Fold war victory
  • 0.5 Diplomacy federation.png Establish Hegemony war victory
  • 0.5 Diplomacy istributary.png Impounding Assets war victory
  • 0.5 Diplomacy pathofchains.png Bring Into Fold war victory
  • 2 Prethoryn Scourge or Contingency conquered a colony
  • 2 Unbidden, Aberrant, Vehement or Synth Queen destroyed a colony
  • 1000 Upgraded an Aetherophasic Engine to stage 2
  • 10 Destroy a star system by Star-Eater
  • 3 Use World Cracker, Global Pacifier, Neutron Sweep, Divine Enforcer, Nanobot Diffuser, Deluge Machine, Toxifier or Devolving Beam on a colony belonging to another empire
  • 1 Use World Cracker or Toxifier on a non-colony planet belonging to another empire

Once threat is generated, all empires gain their threat rating towards the threatening empire, with the following factors:

  • Multiplied by Threat concern factor of AI personalities
  • ×0 if same Federation with threatening empire
  • ×0.5 if Diplomacy non aggression pact.png Non-Aggression Pact with threatening empire
  • ×0.1 to ×2 from relative power to threatening empire
  • ×0 to ×1, x1 - 0.01 per 1 border distance to threatening empire
  • ×0.75 to ×1.25, x1 - 0.002 per 1 point of opinion towards threatening empire

Threat decays 0.25 per month, and there are no other ways to lower threat.

Diplomatic actions and agreements[edit | edit source]

Diplomatic actions are divided into two types: simple actions, which happen as soon as an empire selects one, and agreements, which require the recipient to agree for it to take force. Many actions have a 10-year cooldown between uses. An empire has 6 months to respond to a diplomatic request before it is automatically declined.

Diplomatic agreements are various treaties that generally require both parties to accept before the agreement becomes active. Most agreements are bilateral and mutual, with a few agreements being asymmetric. Most agreements can be cancelled by either party without approval from the other. Most agreements cannot be proposed if the recipient has the Pompous Purists Pompous Purists civic unless the proposer is their overlord. Empires with Inward Perfection Inward Perfection can also not receive or propose most agreements.

Most diplomatic agreements require a certain level of either trust or relations between the two empires. Additionally, there must be an established Embassy our.png embassy or the proposer must have the Diplomatic Networking Diplomatic Networking tradition. Most diplomatic agreements add a minimum intel cap and provide greater details on related types of intelligence.

General diplomacy[edit | edit source]

Agreement Effects Requirements
Diplomatic embassy.png Embassy
  • Envoys Envoy action improving relations.png improve relations 3 time faster
    • Intel.png +20 Intel cap from diplomatic sources
    • Trust growth +0.10 Trust growth
  • Enables most other agreements without requiring the Diplomatic Networking Diplomatic Networking tradition
No Diplomacy war.png war or Diplomacy rivalry.png rivalry between proposer and recipient
Diplomacy non aggression pact.png Non-Aggression Pact
  • Neither empire can declare war upon each other
    • Intel.png 20 Minimum intel cap
    • Trust growth +0.50 Trust growth and Trust cap 75 trust cap
    • Monthly influence −0.25 Monthly influence upkeep
  • Both
    • Neutral or better relations or Diplomacy trust.png 10 trust
    • Embassy or proposer is Envoy action improving relations.png improving relations with recipient
    • Not at war with each other
    • Independent
    • Not in a Diplomacy federation.png federation
Diplomacy commercial pact.png Commercial Pact
  • Each empire gains 10% of the other's Trade value.png trade value without losing any for itself
    • Intel.png 20 Minimum intel cap
    • Trust growth +0.25 Trust growth
    • Monthly influence −0.25 Monthly influence upkeep
  • Both
    • Positive or better relations or Diplomacy trust.png 20 trust
    • Either:
      • Embassy
      • Proposer has Diplomatic Networking Diplomatic Networking tradition
      • Proposer has Universal Transactions Universal Transactions ascension perk
    • Not at war with each other
    • Independent
    • Diplomacy federation.png Federation allows separate treaties or
      • in the same federation or not in a federation
    • Neither:
      • Gestalt consciousness.png Gestalt Consciousness
      • Criminal Heritage Criminal Heritage
      • Inward Perfection Inward Perfection
Diplomacy research agreement.png Research Agreement
  • Mod country all tech research speed.png +25% Research speed for technologies already researched by the other empire
    • Intel.png 30 Minimum intel cap
    • Trust growth +0.10 Trust growth
    • Monthly influence −0.25 Monthly influence upkeep
  • Both
    • Positive or better relations or Diplomacy trust.png 20 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
    • Not at war with each other
    • Independent
    • Diplomacy federation.png Federation allows separate treaties or
      • in the same federation or not in a federation
    • Not Inward Perfection Inward Perfection
Diplomacy migration pact.png Migration Treaty
  • Pops from either empire can grow or be used in colony ships in the other empire
    • Intel.png 30 Minimum intel cap
    • Trust growth +0.25 Trust growth
    • Monthly influence −0.25 Monthly influence upkeep
  • Both
    • Positive or better relations or Diplomacy trust.png 20 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
    • Not at war with each other
    • Independent
    • Diplomacy federation.png Federation allows separate treaties or
      • in the same federation or not in a federation
    • Neither:
      • Gestalt consciousness.png Gestalt Consciousness
      • Barbaric Despoilers Barbaric Despoilers
      • Inward Perfection Inward Perfection
  • Proposer is not Pompous Purists Pompous Purists
Diplomacy guarantee.png Guarantee Independence
  • Proposer joins recipient's defensive wars
  • Recipient gains Diplomacy opinion.png +10 opinion towards proposer
    • Intel.png 20 Minimum intel cap
    • Trust growth +0.25 Trust growth
    • Monthly influence −0.25 Monthly influence upkeep for proposer
  • Both
    • Neutral or better relations or Diplomacy trust.png 10 trust
    • Embassy or proposer is Envoy action improving relations.png improving relations with recipient
    • Not at war with each other
    • Independent
    • Not in a Diplomacy federation.png federation
    • Not Inward Perfection Inward Perfection
    • No Diplomacy defensive pact.png defensive pact
Diplomacy defensive pact.png Defensive Pact
  • Each empire joins defensive wars of the other
  • Mutual Diplomacy opinion.png +20 opinion
    • Intel.png 40 Minimum intel cap
    • Trust growth +0.75 Trust growth and Trust cap 100 trust cap
    • Monthly influence −1.00 Monthly influence upkeep
  • Both
    • Positive relations or Diplomacy trust.png 20 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
    • At peace
    • Independent
    • Not in a Diplomacy federation.png federation
    • Not Inward Perfection Inward Perfection
Diplomacy rivalry.png Rivalry
  • Proposer gains:
    • Monthly influence +0.5 Monthly influence
    • Automatic Diplomacy closed borders.png closed borders against recipient except during a truce
    • Diplomacy status casus belli holder.png Animosity casus belli against recipient
    • Mod country claim influence cost.png −20% Claim influence cost against recipient
  • Mutual Diplomacy opinion.png −100 opinion and Trust growth −2 trust growth
  • Proposer is not Inward Perfection Inward Perfection
  • Either:
    • Terrible relations
    • Proposer is Envoy action harming relations.png harming relations
    • Proposer is at war with recipient
    • Either has Supremacist supremacist diplomatic stance
    • Either has Antagonistic antagonistic diplomatic stance
    • Either is fallen empire unless proposer is a Diplomacy isvassal.png subject
    • Recipient has declared proposer a Diplomacy rivalry.png rival
Diplomatic actions
Action Effects Requirements
Diplomatic embassy.png Recall Embassy Recalls embassy Proposer has an embassy with recipient
Diplomacy non aggression pact.png Break Non-Aggression Pact
  • Ends non-aggression pact
  • Creates 10-year truce between proposer and recipient
  • Recipient gains decaying Diplomacy opinion.png −25 opinion of proposer
Proposer has non-aggression pact with recipient
Diplomacy commercial pact.png Break Commercial Pact
  • Ends commercial pact
  • Creates 10-year truce between proposer and recipient
  • Recipient gains decaying Diplomacy opinion.png −25 opinion of proposer
Proposer has commercial pact with recipient
Diplomacy research agreement.png Break Research Agreement
  • Ends research agreement
  • Recipient gains decaying Diplomacy opinion.png −25 opinion of proposer
Proposer has research agreement with recipient
Diplomacy migration pact.png Break Migration Treaty
  • Ends migration treaty
  • Recipient gains decaying Diplomacy opinion.png −15 opinion of proposer
Proposer has migration treaty with recipient
Diplomacy guarantee.png Revoke Guarantee
  • Ends guarantee independence
  • Creates 10-year truce from proposer toward recipient
  • Recipient gains decaying Diplomacy opinion.png −15 opinion of proposer
Proposer has guarantees recipient's independence
Diplomacy defensive pact.png Break Defensive Pact
  • Ends defensive pact
  • Creates 10-year truce between proposer and recipient
  • Recipient gains decaying Diplomacy opinion.png −100 opinion of proposer
Proposer is at peace and has defensive pact with recipient
Diplomacy rivalry.png End Rivalry Ends proposer's rivalry of recipient Proposer has had recipient as a Diplomacy rivalry.png rival for at least 10 years
Envoy action improving relations.png Improve Relations
  • Diplomacy opinion.png +0.25 Opinion monthly, up to +100 max
  • Requires an assigned Envoy.png envoy
  • If the envoy is recalled or reassigned, Diplomacy opinion.png opinion decays by −1 monthly to 0
  • Proposer
    • Not at war or Envoy action harming relations.png harming relations with recipient
    • Has an available envoy to assign
Envoy action harming relations.png Harm Relations
  • Diplomacy opinion.png −0.5 Opinion monthly, up to −100 max
  • Requires an assigned Envoy.png envoy
  • If the envoy is recalled or reassigned, Diplomacy opinion.png opinion decays by +1 monthly to 0
  • Proposer
    • Not at war or Envoy action improving relations.png improving relations with recipient
    • Has an available envoy to assign
Spy network.png Build Spy Network
  • Builds a Spy Network in recipient
  • Requires an assigned Envoy.png envoy
  • Proposer
    • Not already building a spy network in recipient
    • Has an available envoy to assign
Menu icon claims.png Make Claims Switches to the Claims interface. Proposer is allowed to make claims
Diplomacy war.png Declare War
  • Enters the Wargoals menu to declare a war
  • Mutual Diplomacy opinion.png −50 opinion and Trust growth −2 trust growth while at war
  • Proposer
    • Is not at war with recipient
    • Does not have a Diplomacy truce.png truce, pact, or federation with recipient
    • Does not have any branch offices on recipient's planets
Diplomacy open borders.png Open Borders
  • Allows recipient's ships access to owned systems
  • Borders are opened automatically:
    • After a peace treaty, during 10-year truce between all war participants
    • Between overlords and their subjects
    • By certain resolutions in the Galactic Community or Galactic Imperium
Proposer has not declared recipient a Diplomacy rivalry.png rival
Diplomacy closed borders.png Close Borders
  • Prevents recipient's ships access to owned systems while at peace
  • Borders automatically closed for rivals
  • Recipient gains Diplomacy opinion.png −20 opinion towards proposer
  • Proposer does not have a Diplomacy truce.png truce with recipient
  • Not available between overlords and subjects
Insult.png Insult
  • Recipient gains decaying Diplomacy opinion.png −200 opinion towards proposer
  • With the Tech satisfying insults.png Satisfying Insults technology, instead:
    • Recipient gains −300 Diplomacy opinion.png Opinion towards proposer
    • Proposer gains +50 Influence.png Influence (5 years cooldown)
  • Either:
    • Tense or worse relations
    • Proposer is Envoy action harming relations.png harming relations
    • Proposer is at war with recipient
    • Either is fallen empire
Diplomacy seize council seat.png Add to Imperial Council Adds recipient to the Imperial Council at a cost of Influence.png 100 influence
  • Proposer
    • Has Influence.png 100 influence
    • Is Galactic Emperor
  • Recipient is a member of the GalacticEmpire mainButton.png Galactic Imperium
  • By Appointment Imperial Council resolution is enacted
  • There is an empty seat on the Imperial Council
Diplomacy seize council seat.png Kick from Imperial Council Removes recipient from the Imperial Council at a cost of Influence.png 100 influence
  • Proposer
    • Has Influence.png 100 influence
    • Is Galactic Emperor
  • Recipient is a member of the Imperial Council
  • By Appointment Imperial Council resolution is enacted
GalacticEmpire mainButton.png Join the Galactic Imperium Proposer joins the GalacticEmpire mainButton.png Galactic Imperium
  • Proposer is not a member of the Galactic Imperium
  • Recipient is the Galactic Emperor

Subject empire diplomacy[edit | edit source]

See also: Subject empire

Subject empires have certain obligations to their overlord, based on their agreement terms. Subject empires can be blocked from engaging in most diplomacy by the agreement term Limited Diplomacy. Even without that agreement term, most other diplomatic actions and agreements are blocked for subjects. Subjects have Diplomacy opinion.png +25 opinion and Trust growth +0.25 trust growth with their overlord. Additionally, subjects have an additional diplomatic factor, Trade cat loyalty.png loyalty, which determines whether they will engage in trade or other diplomacy with their overlord.

Diplomatic subjugation, whether demanded or asked for, requires both parties to be independent and at peace. Additionally, the potential subject cannot be the Mod country custodian.png Custodian or GalacticEmpire mainButton.png Galactic Emperor, nor have been declared a crisis. Awakened Empires can always propose subjugation.

Agreement Effects Requirements
Diplomacy hasvassal.png Propose Subjugation Enters the terms menu to propose becoming overlord of recipient
  • Proposer
    • Not Diplomacy guarantee.png guaranteeing recipient's independence
  • Recipient
    • Not a member of the GalacticEmpire mainButton.png Galactic Imperium
      • Unless proposer also is a member
  • Both
    • Excellent relations or Diplomacy trust.png 50 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
    • Independent and at peace
Diplomacy isvassal.png Ask to be their Subject Enters the terms menu to propose becoming subject of recipient
  • Proposer
    • Not asking another empire already
    • Not Pompous Purists Pompous Purists
  • Both
    • Excellent relations or Diplomacy trust.png 50 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
    • Independent and at peace
    • Members or not of GalacticEmpire mainButton.png Galactic Imperium
    • Diplomacy federation.png Federation allows separate treaties or
      • in the same federation or not in a federation
Diplomacy isvassal.png Ask to be Released Grants independence to the subject and sets a 10-year Truce Proposer is Diplomacy isvassal.png subject of recipient
Diplomacy secret fealty.png Propose Secret Fealty Proposer gains Diplomacy status casus belli holder.png Allegiance War casus belli against recipient's overlord
  • Proposer
    • Not a Diplomacy isvassal.png subject
    • Not Diplomacy hasvassal.png overlord of recipient
  • Recipient
    • Is a Diplomacy isvassal.png subject
    • Has not lost Allegiance War war in last 5 years
  • Both
    • Excellent relations or Diplomacy trust.png 50 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
Diplomatic actions
Action Effects Requirements
Diplomacy hasvassal.png Release Subject Grants independence to the subject and sets a 10-year Truce Proposer is Diplomacy hasvassal.png overlord of recipient
Diplomacy being integrated.png Integrate Subject Integrates the subject into the overlord empire.
  • Proposer
    • Diplomacy hasvassal.png Overlord of recipient for at least 10 years
    • Has Integration Permitted agreement term with recipient
    • Not currently Diplomacy being integrated.png integrating a subject
Diplomacy being integrated.png Cancel Integration Stops current integration Proposer is Diplomacy being integrated.png integrating recipient
Diplomacy support independence.png Support independence
  • Proposer joins recipient if they declare an Diplomacy status casus belli holder.png Independence War
  • Adds proposer's power for relative power of subjects opinion modifier
  • Proposer
    • Not Inward Perfection Inward Perfection
    • Not Diplomacy hasvassal.png overlord of recipient
  • Recipient is a Diplomacy isvassal.png subject
  • Both
    • Neutral or better relations or Diplomacy trust.png 10 trust
    • Embassy or proposer is Envoy action improving relations.png improving relations with recipient
Diplomacy support independence.png Cancel support independence Ends Diplomacy support independence.png support independence of recipient Proposer is Diplomacy support independence.png supporting independence of recipient
Diplomacy secret fealty.png Pledge Secret Fealty Recipient gains Diplomacy status casus belli holder.png Allegiance War casus belli against proposer's overlord
  • Proposer
    • Is a Diplomacy isvassal.png subject
    • Has not lost Allegiance War war in last 5 years
  • Recipient
    • Not a Diplomacy isvassal.png subject
    • Not Diplomacy hasvassal.png overlord of proposer
  • Both
    • Excellent relations or Diplomacy trust.png 50 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
Diplomacy secret fealty.png End Secret Fealty Ends secret fealty status with recipient Proposer has pledged or received secret fealty with the recipient

Federation diplomacy[edit | edit source]

See also: Federation

Federations are multi-faceted and multi-lateral agreements between two or more empires to provide mutual defense and other benefits to the members of the federation. Agreements between federations members or between federation members and other empires depend in part on the current laws of the federation. Federation members cannot sign Diplomacy guarantee.png guarantee independence, Diplomacy support independence.png support independence, Diplomacy non aggression pact.png non-aggression pacts, or Diplomacy defensive pact.png defensive pacts with any empire. Members can sign Diplomacy research agreement.png research agreements, Diplomacy commercial pact.png commercial pacts, and Diplomacy migration pact.png migration treaties with each other or other empires unless the federation's laws prevent them from doing so.

By default, joining a federation requires the unanimous approval of all current members of that federation, whether an empire petitions for membership or a current member invites another empire to join. With the Federations Federations DLC, it is possible to change that requirement to be a majority vote or be decided by the federation president alone. Joining or leaving a federation requires the federation and the potential member to be at peace. Members of the GalacticEmpire mainButton.png Galactic Imperium cannot join or associate with federations.

Inward Perfection Inward Perfection empires cannot join a federation diplomatically; they can be forced in with the Diplomacy status casus belli holder.png Establish Hegemony casus belli or if their overlord joins a federation with the Yes Can Subjects Join law; they can be Diplomatic embassy.png federation associates, however.

Diplomacy federation.png Federation members have Diplomacy opinion.png +50 opinion, Trust cap 100 trust cap, and Trust growth +1 trust growth with each other; they must also pay Influence.png −1 influence in diplomatic upkeep. Diplomatic embassy.png Federation associates have Diplomacy opinion.png +10 opinion, Trust cap 100 trust cap, and Trust growth +0.5 trust growth with members of the associated federation.

Agreement Effect Federation vote Requirements
Diplomacy federation.png Form Federation Creates federation with recipient None
  • Proposer has The Federation The Federation tradition
  • Both
    • Not in a Diplomacy federation.png Federation
    • Not a Diplomacy isvassal.png subject
    • Excellent relations or Diplomacy trust.png 30 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
Diplomacy federation.png Invite to Federation Invites recipient to join the Federation By Invite Members law
  • Proposer is a Diplomacy federation.png Federation member
  • Recipient
    • Not in a Diplomacy federation.png Federation
    • Independent or Diplomacy isvassal.png subject of proposer
  • Both
    • Excellent relations or Diplomacy trust.png 30 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
Diplomacy federation.png Ask to join Federation Requests to join an already existing Federation By Invite Members law
  • Proposer
    • Not in a Diplomacy federation.png Federation
    • Independent or Diplomacy isvassal.png subject of recipient
  • Recipient is a Diplomacy federation.png Federation member
  • Both
    • Excellent relations or Diplomacy trust.png 30 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
Diplomacy federation.png Kick from Federation
  • Starts a vote to kick the member from the Federation
  • Recipient gains decaying Diplomacy opinion.png −100 opinion of proposer
  • Gains decaying Diplomacy opinion.png −200 opinion of federation members if kicked
By Kick Members law
  • Both members of same Diplomacy federation.png Federation
  • Proposer is not Diplomacy isvassal.png subject of recipient
  • At least three members in Federation
Diplomacy federation.png Ask to leave Federation
  • Requests to leave the Federation
  • Refusing grants the Diplomacy status casus belli holder.png Secession casus belli and a decaying Diplomacy opinion.png −45 opinion.
President only
  • Proposer is Federation hegemony.png Hegemony member
  • Recipient is Federation hegemony.png Hegemony president
Diplomatic embassy.png Offer Association Status The empire and the federation will not be able to declare war upon each other. Unanimous
  • Proposer is a Diplomacy federation.png Federation member
  • Recipient is not in a Diplomacy federation.png Federation
  • Both
    • Positive or better relations or Diplomacy trust.png 20 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
Diplomatic embassy.png Request Association Status The empire and the federation will not be able to declare war upon each other. Unanimous
  • Proposer is not in a Diplomacy federation.png Federation
  • Recipient is a Diplomacy federation.png Federation member
  • Both
    • Positive or better relations or Diplomacy trust.png 20 trust
    • Embassy or proposer has Diplomatic Networking Diplomatic Networking tradition
Diplomatic actions
Action Effect Federation vote Requirements
Diplomacy federation.png Leave Federation
  • Leaves the Federation
  • Creates a truce between the federation and former member
  • Federation members gain decaying Diplomacy opinion.png −200 opinion with former member
None
  • Proposer
    • Not a Diplomacy isvassal.png subject
    • Not Federation hegemony.png Hegemony member
Diplomatic embassy.png Revoke Association Status
  • Creates a truce between the federation and former associate
  • Recipient gains decaying Diplomacy opinion.png −25 opinion with federation members if association status is revoked
Majority
  • Proposer is a Diplomacy federation.png Federation member
  • Recipient is a Diplomatic embassy.png Federation associate
Diplomatic embassy.png End Association Status
  • Creates a truce between the federation and former associate
  • Federation members gain decaying Diplomacy opinion.png −25 opinion with former associate
None Proposer is a Diplomatic embassy.png Federation associate

Acceptance[edit | edit source]

The acceptance of diplomatic agreements by computer empires is determined by multiple factors.

Agreement Attitude Relative power icon.png Relative power Scaling per Other factors
Friendly Receptive/Cordial/Protective Neutral/Wary Overwhelming Superior Shared Rival 10 Opinion Distance
Diplomatic embassy.png Embassy +100 +40 −25 +20 +10 +40 +5 −0.5 +60 per shared Defensive Pact
Diplomacy non aggression pact.png Non-Aggression Pact +100 +50 0 +100 +50 +50 +2 −1 −30 per existing Non-Aggression Pact
Diplomacy commercial pact.png Commercial Pact +100 +50 0 0 0 0 +4 −1 +1 per given Trade Value
−30 per existing Commercial Pact
Diplomacy research agreement.png Research Agreement +100 +50 0 0 0 0 +4 −1 +0.5 per tech either empire doesn't have
−30 per existing Research Agreement
Diplomacy migration pact.png Migration Treaty +10 0 0 0 0 0 +5 −1 +10 Loyal attitude
Diplomacy defensive pact.png Defensive Pact +50 +20 −50 +20 +10 +30 +2 −1 +30 per shared Defensive Pact
−50 per existing Defensive Pact
Diplomacy federation.png Federation +30 0 −50 +20 +10 +10 +1 −1 +100 Federation Associate
+30 Crisis
−30 different War Philosophy policy
Diplomacy hasvassal.png Demand Subjugation +20 0 −20 +100 +50 0 0 −0.5 −100 below 50 Trust
−0.25 per pop

Personality[edit | edit source]

The most specific factor that determines an empire's acceptance rate is its AI personality.

AI personality Agreement Federation Mod country trade attractiveness.png Trade Willingness
Diplomacy non aggression pact.png Diplomacy defensive pact.png Diplomacy research agreement.png Diplomacy commercial pact.png Diplomacy migration pact.png Federation default.png Federation trade.png Federation military.png Federation research.png Federation spiritualist.png Federation hegemony.png
Decadent Hierarchy +20 −10 0 0 −100 −30 −30 −30 −30 −30 −10 90%
Democratic Crusaders 0 +20 0 0 0 +10 0 +10 0 0 −50 90%
Erudite Explorers +5 +5 +50 +10 0 0 0 0 +10 −10 0 90%
Evangelizing Zealots 0 0 −20 −20 0 −20 −20 −10 −20 +20 −20 75%
Federation Builders +25 +25 +15 +15 +10 +20 +10 +10 +10 +10 +10 95%
Harmonious Collective +20 0 +10 +10 −10 0 0 0 0 0 0 90%
Hegemonic Imperialists −10 +10 −10 −10 −50 −20 −20 −10 −20 −20 0 80%
Honorbound Warriors −100 +20 0 −20 0 −10 −20 0 −20 −20 −10 70%
Migratory Flock +20 0 +20 +20 +100 +20 +20 +10 +20 −20 +10 110%
Peaceful Traders +20 0 +10 +20 +20 +10 +20 −10 +10 −10 +10 100%
Ruthless Capitalists −10 0 +10 +20 0 −10 +10 −10 −10 −10 −10 100%
Slaving Despots −20 0 0 0 −100 −10 −10 −10 −10 −10 0 80%
Spiritual Seekers +20 +10 +10 +10 +20 +10 +10 +10 −10 +10 +10 90%
Xenophobic Isolationists +20 −20 −20 −20 −100 −50 −50 −50 −50 −50 −50 50%
Fanatical Befrienders +50 +50 +50 +50 +50 +50 +30 +30 +30 +30 +30 100%
Fanatical Purifiers 0 0 0 0 0 No.png No.png No.png No.png No.png No.png 50%
Auth hive mind.png Hive Mind −10 −10 0 No.png No.png −50 −100 −30 −50 −50 −50 70%
Auth machine intelligence.png Machine Intelligence 0 0 0 No.png No.png −30 −100 −20 −20 −100 −30 80%
Rogue Servitor Rogue Servitors 0 0 0 No.png No.png 0 0 0 0 −100 +10 90%
Driven Assimilator Driven Assimilators 0 0 0 No.png No.png −50 −50 −50 −50 −100 −50 50%
Determined Exterminator Determined Exterminators 0 0 0 No.png No.png No.png No.png No.png No.png No.png No.png 100%
Galactic Nemesis Crisis Aspirant 0 0 0 0 0 0 0 0 0 0 0 25%
Imperial Liege Indolent Overlord 0 0 0 0 0 0 0 0 0 0 0 50%
Origins slavers.png Benevolent Corporation +20 −10 +10 +50 +10 0 0 0 0 0 0 75%

Trade deals[edit | edit source]

Trade deals are instant or monthly transfers of resources or other assets between two empires. Deals that transfer monthly resources last between 10 and 30 years; once the AI fills their stockpile, long-term contracts become only viable option. It is possible to break long-term trade contracts if not enough resources are stockpiled, but this causes an Diplomacy opinion.png opinion penalty. Diplomatic trades often can yield better deals than the market. The AI will never accept mixed long-term/instant trades. The value the AI places on a particular resource in a deal is largely based on how much of YOUR economy is devoted to producing that resource - shifting your economy to focus on a particular resource will cause all of the AI empires to value it less in deals. Although Gestalt consciousness.png Gestalt Consciousness empires have no use for Consumer goods.png consumer goods or Zro.png Zro, they are still willing to trade for them.

Trading requires a neutral or positive attitude between the two empires. Empires holding a negative attitude will accept only gifts (giving them resources without them giving anything in return). Fallen empires only trade if they are patronizing or enigmatic towards the proposing empire and will never trade strategic resources. Resources cannot be traded between overlords and subjects if the terms of agreement include contribution or subsidies in that resource.

Mod country trade attractiveness.png Trade willingness shows how much an empire is open to trading with other empires and is dependent on their AI personality. The lower their trade willingness is, the more favorable a trade deal has to be for them to see it as fair. Empires with less than 75% trade willingness will never make offers.

In addition to resources, the following things can be traded diplomatically:

  • Trade cat sensor.png Communications: Valued based on the number of new contacts. Does not include Enclaves. Fallen Empires always refuse.
  • Trade cat sensor.png Active Sensor Link: Valued based on distance, neighboring empires being more interested. Allows the empire receiving the link to see everything the granting empire can see. Only available as a timed deal. Fallen Empires always refuse.
  • Trade cat transfer control.png Transfer System: Available only towards neighbors during peacetime, it is the most valued trade option and can be used to offer to cede one of your star systems, usually non-preferred planets that are too expensive to terraform or adapt pops to, or as a way to ease opinion penalty of claims or border tension. The AI will always refuse to trade away their own systems, and will not accept systems that contain colonized Holy Worlds or border the Militant Isolationists.
  • Trade cat specimens.png Specimens: Valued by selling cost x1.3, or twice more if they don't have a specimen from that category.
  • Trade cat transfer leader.png Transfer Leader: Only available to and from empires with the Tactical Algorithms Tactical Algorithms civic or from a tier 2 specialized subject to the overlord. Valued based on the leader's abilities. Requires both empires to have the same authority if Gestalt consciousness.png Gestalt Consciousness. Maximum one Leader per trade.

Subject trade deals[edit | edit source]

Subject empires have additional trading options with their overlord:

  • Trade cat transfer fleet.png Borrow Fleet: Gives the subject temporary control a fleet. Valued based on how much of the total fleet power the fleets represent.
  • Trade cat action.png Pledge Loyalty: Only available from a subject towards the overlord as a timed trade deal; if the subject has Diplomacy opinion.png 150 opinion or better towards the overlord, it gives Trade cat loyalty.png +2.5 loyalty monthly, otherwise +1.5 monthly.
  • Trade cat action.png Share Empire Data: Adds Intel.png +20 intel from the giver to the recipient; can be given by the overlord if they have 80 or less intel on the subject; can be given by the subject if they have 40 or less intel on the overlord.
  • Trade cat loyalty.png Loyalty: Only available from a subject towards its overlord, each point of loyalty will increase trade acceptance by 1. Loyalty can be used even if the value would become negative, up to −100.

Specialist subjects have additional, unique trade options which extend their bonuses to the overlord, usually at the cost of their own:

Timed trade actions[edit | edit source]

Timed trade action provide modifiers for the overlord at thee expense of negative modifiers for the subject.

Subject type Trade cat action.png Trade action Effect Overlord Subject Multiplied by tier
Specialist subject bulwark.png Bulwark Bulwark Prefabs Spaceport 1.png Defense Platform
  • Defense platform build cost Build cost

  • Upkeep Upkeep
−25%/−50%/−75% +25%/+50%/+75% Yes.png
Prospectorium Prospectorium Prospectorium Techniques Volatile motes.pngExotic gases.pngRare crystals.png Monthly strategic resources +5%/+10%/+15% −5%/−10%/−15% Yes.png
Specialist subject scholarium.png Scholarium Scholarium Processors Research.png Research station output +20%/+30%/+40% −10%/−15%/−20% Yes.png
Scholarium Hypotheses Mod num tech alternatives add.png Research alternatives +1 −1 No.png

Technology sharing[edit | edit source]

Technology sharing trade actions are instant trade actions that give specialist technologies as research options to the overlord.

Subject type Trade cat action.png Trade action Effect
Specialist subject bulwark.png Bulwark Bulwark Technology
  • Researched Bulwark technologies given as options to Overlord

  • Subject gets Bulwark Technology Sharing modifier for Time 1 year:
    • Engineering research.png −10% Engineering research if sharing: StarholdStar FortressEngineering researchTech modular engineering.png
    • Physics research.png −10% Physics research if sharing: Tech planetary shield generator.png
Prospectorium Prospectorium Prospectorium Technology
  • Researched Prospectorium technologies given as options to Overlord

  • Subject gets Prospectorium Technology Sharing modifier for Time 1 year:
    • Engineering research.png −10% Engineering research if sharing: Exotic Gas ExtractionTech mine rare crystals.pngLiving Metal
    • Physics research.png −10% Physics research if sharing: Tech volatile motes.pngDark Matter Drawing
    • Society research.png −10% Society research if sharing: Tech mine zro.png
  • Subject pays Menu icon strategic resource.png 100 strategic resources by technology shared

Trade acceptance[edit | edit source]

The trade acceptance number shows how much the other empire favors a deal. A trade acceptance lower than 1 means that the other empire sees the deal as disadvantageous for them and will always refuse it. A trade acceptance of 1 means that AI empire sees the deal as fair and will always accept it. A trade acceptance higher than 1 means that the other empire sees the deal as advantageous for them and will give a temporary bonus to their Diplomacy opinion.png opinion, up to a limit of +100.

Favors[edit | edit source]

Favors can only be obtained through events and have two purposes. First, an empire can call upon Favors to add another empire's Diplomatic weight.png Diplomatic Weight to theirs (+10% per favor) when voting on Resolutions in the Galactic Community as long as the other empire is not already voting the same way. This does not decrease the other empire's diplomatic weight for the vote. Second, Favors increase the acceptance rate of certain diplomatic agreements or federation laws by +5 for each Favor. An empire can owe another empire up to 10 Favors.

Multiple empires can call upon Favors from the same target empire and one empire can simultaneously call upon Favors from multiple target empires.

Attitude[edit | edit source]

Each empire will have a specific attitude towards other empires dictated by their AI personality, diplomatic interactions and the relative power of both empires.

Attitude Trade & Pacts Prefer peace Other Effects Requirements Description
Neutral Yes.png Yes.png none none below This Empire does not consider us relevant to their interests.
Wary Yes.png Yes.png none inferior relative power and shared border This Empire maintains a cautious attitude towards us.
Receptive Yes.png Yes.png more inclined to accept diplomatic pacts diplomatic AI personalities This Empire is interested in closer relations with us.
Cordial Yes.png Yes.png more inclined to accept diplomatic pacts high opinion This Empire is amenable to peaceful coexistence and trading with us.
Friendly Yes.png Yes.png more inclined to accept diplomatic pacts and join a federation high opinion and successful past diplomacy This Empire views us as a friend and may be willing to form an alliance with us.
Protective Yes.png Yes.png more inclined to accept diplomatic pacts and may propose subjugation high opinion and superior relative power This Empire believes that we are weak and need their protection.
Suspicious No.png Yes.png none low opinion This Empire views us with suspicion and mistrust.
Rival No.png Yes.png none rival with low opinion This Empire views us as their rival.
Hostile No.png No.png none very low opinion This Empire views us as their enemy. They are likely to attack us if they think they can win.
Domineering No.png No.png only uses the Subjugation Casus Belli low opinion and Subjugator AI This Empire believes that we would make a fine vassal.
Threatened No.png No.png none 50 or higher threat rating This Empire views us as a threatening menace.
Overlord Yes.png Yes.png none overlord This Empire is our overlord.
Loyal Yes.png Yes.png none subject with positive loyalty This subject is loyal to us.
Disloyal No.png No.png considers the relative power of other subjects as well subject with negative loyalty This subject resents its subservience to us.
Dismissive No.png Yes.png none Fallen Empire This Fallen Empire considers us largely beneath their notice.
Patronizing Yes.png Yes.png may bestow gifts Fallen Empire with high opinion This Fallen Empire views us as errant children in need of their guidance. They may deign to bestow gifts of technology, resources or ships on us.
Angry No.png No.png will send a demand which will grant them Casus Belli if refused Fallen Empire with low opinion We have angered this Fallen Empire with our actions, and they may declare war to punish us.
Arrogant No.png Yes.png no effect distant Awakened Empire This Awakened Empire views us with dismissive arrogance.
Imperious No.png Yes.png will propose subjugation neighbor Awakened Empire This Awakened Empire views us as a future subject. They are likely to demand we surrender our independence.
Belligerent No.png No.png none Awakened Empire with low opinion This Awakened Empire views us as a target of conquest. They are likely to attack us.
Custodial Yes.png Yes.png accepts joining a Federation Guardian Awakened Empires This Awakened Empire believes that it needs to protect us from the crisis currently threatening the galaxy. They are likely to attempt to ally us.
Enigmatic Yes.png Yes.png opinion is hidden and has no impact Ancient Caretakers This Fallen Empire is an ancient artificial intelligence that behaves in a strange and unpredictable manner. We do not know what to expect from it.
Berserk No.png No.png attacks any empire nearby Malfunctioning Custodians This Awakened Empire is an ancient artificial intelligence that has gone berserk. It is likely to attack anything and anyone around it.

Genocidal Diplomacy[edit | edit source]

Empires with the Fanatic Purifiers Fanatic Purifiers civic can only engage in diplomacy with empires of the same primary species. Note that these other empires still have −1000 Diplomacy opinion.png Opinion unless they are also Fanatic Purifiers Fanatic Purifiers, in which case they have +200 Diplomacy opinion.png Opinion towards each other.

Empires with the Determined Exterminator Determined Exterminator civic can only engage in diplomacy with empires with Machine Machine or Mechanical Mechanical main species.

Empires with the Devouring Swarm Devouring Swarm and Terravore civics cannot engage in any diplomacy at all, not even with identical empires. Envoys are thus only useful to them for Espionage and First Contact.

References[edit | edit source]


Game concepts
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