AI personalities
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AI empires act and behave based on their AI Personality type which in turn is dictated by factors like what ethics, traits and government type the empire has. The personality type will direct the empires' behavior in terms of foreign- and domestic policy, fleet budgeting, political behavior and general empire characteristics. The empire's personality can be found in the diplomacy screen, just under the ethics list.
Behavior[edit | edit source]
Note: The following concerns individual AI personalities. For general AI behavior and decision-making, see AI players.
AI behavior can be broken down into characteristics and behavior modifiers:
Characteristics[edit | edit source]
Characteristics determine whether an empire will take certain actions or not:
- Attack Neutrals - Attacks neutral entities (Tiyanki, Nomads, Enclaves, Caravaneers and the Infinity Machine)
- Conqueror – Uses the Claim Wargoal during offensive or defensive wars
- Liberator – Uses the Liberation Wargoal during offensive or defensive wars
- Subjugator – Uses the Subjugation Wargoal during offensive or defensive wars and adopts the Domination tradition tree early
- Opportunist – More likely to attack another empire if that empire is already fighting a war
- Isolationist - Always keeps borders closed and does not accept refugees
- Propagator - More likely to declare war when it can't expand (Aggressiveness changes to 10x rather than the default 4x)
- Alien Citizenship – Gives all species Full Citizenship rights
- Slaver – Enslaves aliens
- Purger – Purges alien pops
- Displacer - Uses the Displacement Purge policy against alien pops and does not accept refugees
- Robot Citizenship – Uses the Citizen Rights Artificial Intelligence policy
- Robot Servitude – Uses the Servitude Artificial Intelligence policy
- Dominator – Invades pre-FTL civilizations
- Infiltrator – Uses the Covert Infiltration Observation mission on pre-FTL civilizations
- Uplifter – Uplifts pre-sapients and enlightens pre-FTL civilizations that reached at least Steam Age
Behavior modifiers[edit | edit source]
Behavior modifiers indicate the modification of certain common actions happening as compared to a generalized norm (1.0x).
- Aggressiveness – Affects the chance of declaring wars against empires they hold negative Attitude towards. Can be lowered or increased by the AI Aggressiveness game setting.
- Border friction – Affects how much negative Opinion Border Friction generates.
- Bravery - Affects how willing the empire is to declare rivalry or go to war with someone stronger. At 0.5 and below they cannot declare war on empires considered Equivalent. At 1.5 and above they can declare war on empires considered Superior. At 2.5 and above they can declare war on empires considered Overwelming.
- Colony spending – Affects how many resources the empire will spend in setting up new colonies.
- Combat bravery - Affects the chance of retreating from battle. At 1.0 they will attempt to retreat from an engagement after losing 50% of their fleet.
- Military spending – Affects how many resources the empire will spend on its fleets and armies.
- Threat concern – Affects how much negative Opinion Threat generates.
- Trade willingness – At 1.0 willingness the empire will accept a deal that is equally good for both sides. Lower values mean the empire will only accept deals shifted in its favor.
Ships[edit | edit source]
These preferences determine how an empire designs its ships. They are ignored if the AI is facing an enemy heavily focused on a certain type of weapon or defense.
- Weapon preference - Preferred weapon type the AI personality will use on its ships.
- Ship size preference - Preferred size of ships the AI personality will put in fleets.
- Hull ratio - Amount of utility slots used for hull boosters on ships.
- Armor ratio - Amount of utility slots used for armor on ships.
- Shields ratio - Amount of utility slots used for shields on ships.
As an example, an empire with 0.5x Shield ratio and 0.5x Armor ratio will design ships where the Utility slots will contain 50% Shield and 50% Armor components.
AI personalities[edit | edit source]
When the game is started the personality with the highest weight will be assigned to the AI empire. Any behavior modifier listed above that is not included in a given entry in the below table means its value is equal to the norm (1.0x).
Note: Species with the Lithoid, Necroid or Aquatic archetype will use a racial room regardless of personality.
| Personality | Characteristics | Behavior modifiers | Prerequisites | Weight & Modifiers | Description |
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Indolent Overlord
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Base: 10000 | An empire that relies heavily upon their vassals, rarely interested in much beyond their home systems. They do not engage others in combat, nor actively expand their own borders unless forced to. |
Hegemonic Imperialists
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Base: 5
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Hegemonic Imperialists consider themselves the rightful rulers of the galaxy, and will attempt to expand their empire by any means possible. |
Federation Builders
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Base: 5 | Federation Builders consider all sentient life to have value and will seek to form a strong federation to protect themselves and others from expansionistic empires. |
Evangelizing Zealots
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Base: 10
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Evangelizing Zealots seek to spread their faith across the galaxy, and are not above using military might to force others to accept their beliefs. |
Spiritual Seekers
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Base: 10
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Spiritual Seekers believe that all life is connected through some higher power that can be understood through its creations. They will seek peaceful cooperation with other empires in the hopes of studying their connection to the divine. |
Erudite Explorers
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Base: 10
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Erudite Explorers value exploration and discovery process above all other things. They will gladly trade for the knowledge they seek, but are not above taking it by force if it proves necessary. |
Honorbound Warriors
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Base: 50 | Honorbound Warriors value honor and martial prowess above all other things. They will seek out worthy foes to fight and have little respect for weaklings and pacifists. |
Democratic Crusaders
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Base: 100 | Democratic Crusaders believe that it is their moral imperative to spread their democratic way of life. They tend to get along well with other democracies, but are more than willing to use military force to "liberate" the populations of less democratic empires. |
Migratory Flock
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Base: 50 | Migratory Flocks seek to spread their species across the galaxy through peaceful means, and will happily migrate to the worlds of other Empires if permitted to do so. |
Harmonious Collective
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Base: 10
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Harmonious Collectives are authoritarian societies where the citizens are devoted to the state without the need for coercion. They are usually friendly towards others, so long as they do not meddle in their internal affairs. |
Xenophobic Isolationists
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Base: 12
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Xenophobic Isolationists want little to do with the rest of the galaxy, preferring to stay within their borders and have as few dealings with aliens as possible. |
Decadent Hierarchy
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Base: 200 | Decadent Hierarchies are isolationist slave societies that have few concerns aside from maintaining their rigid way of life. |
Slaving Despots
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Base: 200 | Slaving Despots are slave societies that rely on military expansion to secure a steady supply of slaves for their mines and farms. They prefer to attack the weak and defenseless. |
Peaceful Traders
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Base: 100 | Peaceful traders are chiefly concerned with the flow of commerce, and prefer trading to fighting. |
Ruthless Capitalists
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Base: 100 | Ruthless Capitalists are willing to go to any length to acquire more wealth and resources for themselves and for their empire. They tend to avoid evenly matched fights, preferring to pounce on the weak and helpless. |
Fanatical Purifiers
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Base: 1000 | Fanatical Purifiers view all alien life as a cosmic mistake and seek to purify the galaxy of its taint. They will never engage in diplomacy with other species. |
Metalheads
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Base: 1000 | Metal. |
Fanatical Befrienders
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Base: 100 | Fanatical Befrienders are highly friendly but deeply lonely individuals. They will attempt to make friends by any means necessary. |
Hive Mind
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Base: 1000 | Hive Minds concern themselves with the propagation of their species above all else. So long as they have room to expand, there is little to fear from them, but if boxed in they will think nothing of seizing worlds and slaughtering their native population. |
| Devouring Swarm
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 Devouring Swarm
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Base: 1000 | Devouring Swarms have a single-minded devotion to self-propagation and view all other forms of life as prey to be consumed. They are not amenable to diplomacy in any form. |
Machine Intelligence
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Base: 1000 | Machine Intelligences have largely put their troubles with organic lifeforms behind them, and are usually open to diplomatic exchanges with other spacefaring races. |
| Rogue Servitors
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 Rogue Servitor
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Base: 1000 | Having come to the conclusion that organic leadership is fraught with chaos and self-destructive tendencies, Servitors are machine intelligences focused on ensuring organics live a safe and comfortable existence, even if that means co-opting their civilization. |
| Driven Assimilators
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 Driven Assimilator
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Base: 1000 | Assimilators are machine intelligences driven by a search for knowledge and diversification. Because Assimilators expand their comprehension of the universe by forcibly sublimating and absorbing organic civilizations into their neural mainframe, they tend to be unpopular with organics. |
| Determined Exterminators
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 Determined Exterminator
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Base: 1000 | Exterminators are machine intelligences who view all sapient organic lifeforms as an intolerable threat to the galaxy. Though they may cooperate with other machines, exterminators are unlikely to interact with organic empires in any capacity beyond attempting their annihilation. |
Crisis Aspirant
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 Become the Crisis ascension perk
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Base: 10000 | Crisis Aspirants are would-be harbingers of galactic doom, backed by unknowable powers. |
Keepers of Knowledge
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Base: 100 | This Fallen Empire dedicates itself to the hoarding of technologies that it believes should be kept out the hands of young and irresponsible races. Pursuing dangerous lines of research may draw their ire. |
| Watchful Regulators
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Base: 100 | This Awakened Empire seeks to control the technological level of all other civilizations in the galaxy. They are likely to attack any empire that will not surrender its technological independence. |
Enigmatic Observers
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Base: 100 | This Fallen Empire dedicates itself to the study of the younger races. Purging and enslaving other species may draw their ire. |
| Benevolent Interventionists
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Base: 100 | This Awakened Empire seeks to protect the lesser races from each other. They are likely to attack any empire that does not accept their enforced peace. |
Holy Guardians
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Base: 100 | This Fallen Empire dedicates itself to the preservation and defense of its holy sites. Colonizing systems that they consider sacred is likely to incur their ire. |
| Doctrinal Enforcers
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Base: 100 | This Awakened Empire seeks to impose its religious doctrines on the galaxy. They are likely to attack any empire that will not willingly convert |
Militant Isolationists
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Base: 100 | The Fallen Empire dedicates itself to the defense of its borders against any intrusions. Colonizing systems that border them is likely to draw their ire. |
| Jingoistic Reclaimers
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Base: 100 | The Awakened Empire seeks to restore its lost dominion over the galaxy. They are likely to attack any empire that does not acknowledge their overlordship. |
Ancient Caretakers
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Base: 100 | This Fallen Empire is an ancient artificial intelligence that appears to be operating on some sort of caretaker protocol. It behaves erratically but seems to post no direct threat to us. |
| Galactic Custodians
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Base: 100 | This Awakened Empire is an ancient artificial intelligence acting as a galactic custodian. It will focus all its efforts on defending sapient life against the ongoing crisis. |
| Rampaging Machines
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Base: 100 | This Awakened Empire is an ancient artificial intelligence that has gone berserk. It is likely to attack anything and anyone around it. |
Either:
Not 
Fallback personality[edit | edit source]
If the process of assigning an AI personality to an empire fails (usually due to a glitch) and the AI empire in question is left without an assigned personality when the game begins, the game will assign it the Despicable Neutrals personality as a fallback. Otherwise, in current versions this personality type should not appear in a normal playthrough. As a fallback personality, Despicable Neutrals has no behavior modifiers, but it does have a rather funny and memorable description: "What makes a species turn neutral ... Lust for gold? Power? Or were they just born with hearts full of neutrality?" This is a quote from the Futurama television series.
References[edit | edit source]
Game concepts
| Exploration | Exploration • FTL • Anomaly • Archaeological site • Relics • Pre-FTL species • Fallen empire • Events • Spaceborne aliens • Guardians • Marauders • Caravaneers |
| Celestial bodies | Celestial body • Colonization • Terraforming • Planetary features • Planet modifiers |
| Species | Species • Traits • Population • Pop modification • Species rights • Ethics |
| Governance | Empire • Government • Civics • Policies • Edicts • Leader • Factions • Technology • Traditions • Situations |
| Economy | Economy • Planetary management • Districts • Buildings • Holdings • Jobs • Designation • Trade • Megastructures |
| Diplomacy | Diplomacy • Relations • Galactic community • Federations • Subject empires • Intelligence • AI personalities |
| Warfare | Warfare • Space warfare • Land warfare • Starbase • Ship • Ship designer • Crisis |
| Others | The Shroud • L-Cluster • Unique systems • Preset empires • AI players • Easter eggs |
