Diplomacy¶

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 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. Overlords can send propositions to subjects with the civic.

Envoys¶

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 with another empire, which grants +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 with another empire, which grants −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 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:

Ausklappen Available envoys

Trust¶

Empires which engage in friendly diplomacy build trust over time. Each point of trust adds +1 opinion and +0.5 intel cap. The default 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, while rivalry and 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 and trust cap can be found in the tables to the right.

Threat¶

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 at every other empire, and as it increases, the empire gains a stacking negative opinion modifier towards the aggressor empire, while becoming increasingly friendly with a stacking positive opinion modifier towards other empires that isn't also threatening. 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 Vassalize war victory or status quo with new empire created
• 0.25 Make Tributary or Make Subsidiary war victory or status quo with new empire created
• 0.1 Impose Ideology war victory or status quo with new empire created
• 0.5 Take Galatron war victory
• 0.5 Bring Into Fold war victory
• 0.5 Establish Hegemony war victory
• 0.5 Impounding Assets war victory
• 0.5 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 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.

Favors¶

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 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.

Diplomatic actions and agreements¶

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 to it. Many actions have a 10-year cooldown between uses. Human players have 6 months to respond to a diplomatic request before it is automatically declined.

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

Border access¶

Every empire can have its borders opened or closed towards any other empire it finished a first contact with it. If borders are open the other empire's ships can enter the empire borders. If borders are closed the other empire's ships can enter the empire borders and if the borders are being closed while the other empire's ships are within borders they will all go MIA. If borders are closed towards an empire, it will bring a −25% Opinion penalty. The starting access after a first contact is completed depends on the Initial Border Status policy.

Borders cannot be closed towards empires at Truce with and they cannot be open towards Rivals (in case of both, the Truce takes precedence). Subjects will always have open borders to and from their overlord and fellow subjects. Certain Galactic Community resolutions also force all members to open their borders towards each other. Until first contact is completed borders are always open.

Cloaked ships can enter the borders of empires with closed borders.

Agreements¶

Agreements require the recipient empire to agree to it, affect both empires, and can be ended by either empire at any point. If the recipient is an AI empire the UI will show whether the agreement will be accepted or refused although the exact reasons require at least Medium Intel on Diplomacy.

Agreements are only possible between empires that are at peace with each other and neither empire declared the other a Rival. And if an empire is a subject it can only have agreements with empires that aren't its overlord if the terms of agreement do not include Limited Diplomacy.

Agreement	Effects	Min intel cap	Trust cap	Trust growth	Upkeep			Requirements
Embassy	- Envoys improve relations 3 time faster - +20 Intel cap from diplomatic sources - Enables most other agreements without other requirements	0	50	+0.1
Non-Aggression Pact	- Empires can't declare war on each other - Breaking the agreement starts a Truce - Breaking the agreement gives a decaying −25 Opinion	20	75	+0.5	0.25			- Neutral relations or 10 trust - Embassy or proposer is Improving Relations - Protectorate - The Horde
Commercial Pact	- Both empires gain 10% of the other's Trade without losing any - Reveals Relative Economical Power if not already known - Gives High Intel on colonies and Medium Intel on systems - Breaking the agreement starts a Truce - Breaking the agreement gives a decaying −25 Opinion	20	50	+0.25	0.25			- Positive relations or 20 trust - Either - Embassy - Proposer has Diplomatic Networking tradition - Proposer has Universal Transactions ascension perk - The Horde
Research Agreement	- +25% Research Speed for technologies researched by the other empire - Reveals Relative Technological Power if not already known - Excavation rewards of Nomadic empires inside borders are shared - Excavations of Nomadic empires inside borders cause no penalties - Breaking the agreement gives a decaying −25 Opinion	30	50	+0.1	0.25			- Positive relations or 20 trust - Embassy or proposer has Diplomatic Networking tradition - The Horde
Migration Treaty	- Pops from either empire can grow or be used in colony ships - Breaking the agreement gives a decaying −15 Opinion	30	50	+0.25	0.25			- Positive relations or 20 trust - Embassy or proposer has Diplomatic Networking tradition - Neither empire is Gestalt Consciousness or Barbaric Despoilers - Proposer is not Pompous Purists - The Horde
Defensive Pact	- Empires join each other's defensive wars - Empires gain +20 Opinion with each other - Reveals Relative Fleet Power if not already known - Can only be broken while at peace - Breaking the agreement starts a Truce - Breaking the agreement gives a decaying −100 Opinion	40	100	+0.75	1			- Positive relations or 20 trust - Embassy or proposer has Diplomatic Networking tradition - Both empires are at peace - The Horde
Wayline Pact	- No Opinion penalty from waystations inside borders - If both empires are Nomadic their waylines will use bonuses together - Gives High Intel on systems - Breaking the agreement gives a decaying −15 Opinion	20	50		0.25			- Nomadic - Neutral relations or 10 trust - Embassy or proposer is Improving Relations - Adjacent waystations if both empires are Nomadic - The Horde

General diplomacy¶

Agreement	Effects	Requirements	DLC
Guarantee Independence	- Proposer joins recipient's defensive wars - Recipient gains +10 opinion towards proposer - 20 Minimum intel cap - +0.25 Trust growth - −0.25 Monthly influence upkeep for proposer - Revoking the guarantee creates a 10-years Truce from the proposer - Revoking the guarantee gives −15 Opinion	- Both - Neutral or better relations or 10 trust - Embassy or proposer is improving relations with recipient - Not at war with each other - Independent - Not in a federation - Not Inward Perfection - No Defensive Pact
Rivalry	- Initiator gains: - +0.5 Monthly influence - Automatic closed borders against recipient except during a truce - Animosity casus belli against recipient - −20% Claim influence cost against recipient - Mutual −100 opinion and −2 trust growth - Can only be ended after 10 years	- Initiator is not Inward Perfection - Either: - Terrible relations - Initiator is harming relations - Initiator is at war with recipient - Either has supremacist diplomatic stance - Either has antagonistic diplomatic stance - Either is fallen empire unless initiator is a subject - Recipient has declared initiator a rival
Improve Relations	- +0.25 Opinion monthly, up to +100 max - Requires an assigned envoy - If the envoy is recalled or reassigned, opinion decays by −1 monthly to 0	- Initiator - Not at war or harming relations with recipient - Has an available envoy to assign
Harm Relations	- −0.5 Opinion monthly, up to −100 max - Requires an assigned envoy - If the envoy is recalled or reassigned, opinion decays by +1 monthly to 0	- Initiator - Not at war or improving relations with recipient - Has an available envoy to assign
Build Spy Network	- Builds a Spy Network in recipient - Requires an assigned envoy	- Initiator - Not already building a spy network in recipient - Has an available envoy to assign
Make Claims	Switches to the Claims interface.	Initiator is allowed to make claims
Declare War	- Enters the Wargoals menu to declare a war - Mutual −50 opinion and −2 trust growth while at war	- Initiator - Is not at war with recipient - Does not have a truce, pact, or federation with recipient - Does not have any branch offices on recipient's planets
Insult	- Recipient gains decaying −200 opinion towards sender - With the Satisfying Insults technology, instead: - Recipient gains −300 Opinion towards sender - Sender gains +50 Influence (5 years cooldown)	- Either: - Tense or worse relations - Sender is harming relations - Sender is at war with recipient - Recipient or sender is fallen empire
Add to Imperial Council	Adds recipient to the Imperial Council at a cost of 100 influence	- Initiator - Is the Galactic Emperor - Has 100 influence - Recipient is a member of the Galactic Imperium - By Appointment Imperial Council resolution is enacted - There is an empty seat on the Imperial Council
Kick from Imperial Council	Removes recipient from the Imperial Council at a cost of 100 influence	- Initiator - Is the Galactic Emperor - Has 100 influence - Recipient is a member of the Imperial Council - By Appointment Imperial Council resolution is enacted
Join the Galactic Imperium	Proposer joins the Galactic Imperium	- Initiator is not a member of the Galactic Imperium - Recipient is the Galactic Emperor
Start Proxy War	Enters the Wargoals menu to declare a proxy war	- Both - Finished first contact with the same third empire - Initiator - Secret Societies Secret Societies Influential Cartel civic or finished the Subterfuge tradition tree - 70 trust or 60 infiltration - Recipient - Not Fanatic Xenophobe - Not Barbaric Despoilers - Not Criminal Heritage - Not Driven Assimilator - Not Bodysnatcher - Not Genocidal Fanatic Purifiers Devouring Swarm Devouring Swarm Terravore Devouring Wilderness Determined Exterminator Scorched World Heralds Scorched World Heralds Pyromanic Instinct

Subject empire diplomacy¶

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 +25 opinion and +0.25 trust growth with their overlord. Additionally, subjects have an additional diplomatic factor, 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 Galactic Custodian or Galactic Emperor, nor have been declared a crisis. Awakened Empires can always propose subjugation.

Agreement	Effects	Requirements
Propose Subjugation	Enters the terms menu to propose becoming overlord of recipient	- Proposer - Not guaranteeing recipient's independence - Must be Galactic Imperium member if the recipient is - Embassy or has Diplomatic Networking tradition - Both - Excellent relations or 50 trust - Independent and at peace
Ask to be their Subject	Enters the terms menu to propose becoming subject of recipient	- Proposer - Not asking another empire already - Not Pompous Purists - Embassy or has Diplomatic Networking tradition - Both - Excellent relations or 50 trust - Independent and at peace - Must be Galactic Imperium member if the other is - Not in a federation, federation allows separate treaties, or in the same federation
Ask to be Released	Grants independence to the subject and sets a 10-year Truce	Proposer is subject of recipient
Propose Secret Fealty	Proposer gains Allegiance War casus belli against recipient's overlord	- Proposer - Not a subject - Not overlord of recipient - Embassy or has Diplomatic Networking tradition - Proposer - Is a subject - Has not lost Allegiance War war in last 5 years - Both - Excellent relations or 50 trust

Diplomatic actions

Action	Effects	Requirements
Release Subject	Grants independence to the subject and sets a 10-year Truce	Initiator is overlord of recipient
Integrate Subject	Integrates the subject into the overlord empire.	- Initiator - Overlord of recipient for at least 10 years - Has Integration Permitted agreement term with recipient - Not currently integrating a subject
Cancel Integration	Stops current integration	Initiator is integrating recipient
Support Independence	- Proposer joins recipient if they declare an Independence War - Adds proposer's power for relative power of subjects opinion modifier	- Proposer - Not Inward Perfection - Not overlord of recipient - Embassy or is improving relations with recipient - Recipient is a subject - Both - Neutral or better relations or 10 trust
Cancel Support Independence	Ends support independence of recipient	Proposer is supporting independence of recipient
Pledge Secret Fealty	Recipient gains Allegiance War casus belli against proposer's overlord	- Proposer - Is a subject - Has not lost Allegiance War war in last 5 years - Embassy or has Diplomatic Networking tradition - Recipient - Not a subject - Not overlord of proposer - Both - Excellent relations or 50 trust
End Secret Fealty	Ends secret fealty status with recipient	Proposer has pledged or received secret fealty with the recipient

Federation diplomacy¶

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 guarantee independence, support independence, non-aggression pacts, or defensive pacts with any empire. Members can sign research agreements, commercial pacts, and 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 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 Galactic Imperium cannot join or associate with federations.

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

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

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

Diplomatic actions

Action	Effect	Federation vote	Requirements
Leave Federation	- Leaves the Federation - Creates a truce between the federation and former member - Federation members gain decaying −200 opinion with former member	None	- Initiator - Not a subject - Not Hegemony member
Revoke Association Status	- Creates a truce between the federation and former associate - Recipient gains decaying −25 opinion with federation members if association status is revoked	Majority	- Proposer is a Federation member - Recipient is a Federation associate
End Association Status	- Creates a truce between the federation and former associate - Federation members gain decaying −25 opinion with former associate	None	Proposer is a Federation associate

Acceptance¶

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

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

Personality¶

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

Trade deals¶

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 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 empires have no use for consumer goods or 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.

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:

• Communications: Valued based on the number of new contacts. Does not include Enclaves. Fallen Empires always refuse.
• 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.
• 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.
• Join War: Enters the war on the side of the target. Pacifist empires always refuse to join wars if an attacker asks them. Fallen empires and empires too far away always refuse to join wars. If an empire proposes to join another empire's war the other empire will always accept and how valuable the trade is depends on the current warscore. Cannot be used to join wars against empires with a Non-Aggression Pact or Truce. If accepted and the warring empires haven't established communications they will do so.
• Allow to Leave War: Only available towards the enemy war leader and only if not war leader. If accepted the empire will leave the war. Acceptance depends on the current warscore.
• Specimens: Valued by selling cost x1.3, or twice more if they don't have a specimen from that category.
• Transfer Leader: Only available to and from empires with the 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. Maximum one Leader per trade.

Subject trade deals¶

Subject empires have additional trading options with their overlord:

• Borrow Fleet: Gives the subject temporary control a fleet. Valued based on how much of the total fleet power the fleets represent.
• Pledge Loyalty: Only available from a subject towards the overlord as a timed trade deal; if the subject has 150 opinion or better towards the overlord, it gives +2.5 loyalty monthly, otherwise +1.5 monthly.
• Share Empire Data: Adds +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.
• 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¶

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

Subject type	Trade action	Effect	Overlord	Subject	Multiplied by tier
Bulwark	Bulwark Prefabs	Defense Platform build cost Defense Platform upkeep	−25%/−50%/−75%	+25%/+50%/+75%
Prospectorium	Prospectorium Techniques	Monthly strategic resources	+5%/+10%/+15%	−5%/−10%/−15%
Scholarium	Scholarium Processors	Research station output	+20%/+30%/+40%	−10%/−15%/−20%
	Scholarium Hypotheses	Research alternatives	+1	−1

Technology sharing¶

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

Subject type	Trade action	Effect
Bulwark	Bulwark Technology	- Researched Bulwark technologies given as options to Overlord --- - Subject gets Bulwark Technology Sharing modifier for 1 year: - −10% Engineering research if sharing: - −10% Physics research if sharing:
Prospectorium	Prospectorium Technology	- Researched Prospectorium technologies given as options to Overlord --- - Subject gets Prospectorium Technology Sharing modifier for 1 year: - −10% Engineering research if sharing: - −10% Physics research if sharing: - −10% Society research if sharing: - Subject pays 100 strategic resources by technology shared

Trade acceptance¶

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 opinion, up to a limit of +100.

Attitude¶

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

Genocidal diplomacy¶

Due to their destructive nature, genocidal empires only have limited access to diplomacy, depending of what type of genocidal civic they possess:

• Empires with the Fanatic Purifiers civic can only engage in diplomacy with empires of the same founder species. Note that these other empires still have −1000 Opinion unless they are also Fanatic Purifiers, in which case they have +200 Opinion towards each other.
• Empires with the Determined Exterminator civic can only engage in diplomacy with empires with Machine or Mechanical founder species.
• Empires with the Devouring Swarm, Terravore and Devouring Wilderness 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.
• Empires with the Scorched World Heralds and Pyromanic Instinct civics can only engage in diplomacy with empires who have a Thermophile founder species.

All genocidal empires will refuse joining Federations even with empires they can engage in diplomacy with to avoid possibly being forced in a Federation with an empire they can't engage in diplomacy with.

References¶

Game concepts