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Alliance (Civ6).png Alliance, in Civilization VI, is the next step in Diplomacy when you are ready to take your friendly relationship with another civilization to the next level. Alliance (Civ6).png Alliances become possible after developing the Civil Service civic. You can only enter an Alliance with a nation you are Declared Friends with.


Alliance (Civ6).png Allies automatically share Open Borders. This means you can see everything their cities and units see. Besides, you can make Research Agreements and Defensive Pacts. You cannot take hostile action against an Alliance (Civ6).png Ally.

An Alliance helps improve the relationship between two nations, and it makes proposed deals and other forms of trade go smoothly.

Rise and Fall onward[]

In Rise and Fall, Alliance (Civ6).png Alliances have been greatly expanded into five different types and present much greater possibilities. Research Agreement and Defensive Pact are removed and incorporated into the new Alliance (Civ6).png Alliance mechanics.

There are now five different types of Alliance (Civ6).png Alliances: Research, Military, Economic, Cultural, and Religious, each of which has its own specific benefits. As the alliance continues over time, its benefits will increase! Maintaining an Alliance (Civ6).png Alliance with a player (it doesn't matter which one exactly) accrues Alliance (Civ6).png Alliance points over time, and when enough points have been gathered, your Alliance (Civ6).png Alliance level with this players increases. There are three levels, each one offering more powerful benefits which stack with the earlier ones. You can speed up Alliance (Civ6).png Alliance point accumulation by sending or receiving Trade Route Trade Routes from your ally, or by using specific policies.

Each Alliance (Civ6).png Alliance type is unique; that means that each nation may maintain a particular type of Alliance with only one other nation at a time. For example, if you intend to enter into a Cultural Alliance with civilization A, you cannot do so if either you or they already have a Cultural Alliance with a third party. You will either have to wait until the Alliance (Civ6).png Alliances expire, or choose a different Alliance (Civ6).png Alliance type.

Another difference with vanilla Civilization VI is that allies do not automatically gain Shared Visibility. You still gain visibility on units, but territorial visibility will only be available in other circumstances (for example when reaching level 2 of a Military Alliance, or whenever participating in an Emergency). Also, allies now automatically sign a Defensive Pact to come to each other's aid in case a third nation opens hostilities against either one (and Defensive Pacts cannot be signed outside Alliances anymore).

This system encourages entering into Alliance (Civ6).png Alliances and maintaining them for as long as possible - this way you will be able to build up trust with your partner nation and level up the Alliance (Civ6).png Alliance to reap its greatest benefits! What's more, in Gathering Storm each active Alliance (Civ6).png Alliance gives you +1 Diplomatic Favor Diplomatic Favor per turn per level, which could turn into a major boost of a nation's diplomatic power, especially in earlier ages.

Of course, in order to maintain Alliance (Civ6).png Alliances you will have to avoid offending your partner. Remember that Alliance (Civ6).png Alliances are only possible for renewal if you are on the friendliest of terms with a particular leader! The prerequisite for Alliance (Civ6).png Alliance is that you have to be the Declared Friends of one another still holds true.

Type of Alliance Level 1 Level 2 Level 3
Research Alliance
  • Every 30 turns (on Standard), you unlock a Eureka Eureka for a tech that your ally has researched or boosted, but you have not.
  • Allies receive accelerated research on techs that have been discovered by one civilization but not the other and when researching the same tech concurrently.
Cultural Alliance
  • Each of your Districts grant an additional Great Person point per turn if you have a Trade Route Trade Route from that city to your ally
  • You gain +20% of your ally's Tourism Tourism from Cities
  • You gain +10% of your ally's Culture Culture from Cities
Economic Alliance
  • Bonus Envoy Envoy Points for every City State that is Tributary to your ally
  • Share Suzerain unique bonuses with your ally
Military Alliance
  • +5 Strength Combat Strength against units of players at war with you and your ally
  • +15% Production Production toward military units when you or your ally are at war
  • Share Visibility
  • Units start with a free Promotion
Religious Alliance
  • Your ally's Religion does not exert Religious pressure on cities dominated by your Religion, and vice versa
  • +2 Faith Faith from Trade Route Trade Routes to your ally
  • +1 Faith Faith from Trade Route Trade Routes from your ally
  • +10 Religious Strength Religious Combat Strength against non-ally Religions
  • +1 Faith Faith for each of your Citizens following your ally's religion
  • Bonus Religious Pressure in cities with no followers of your ally's Religion

In order to reach level 2 and 3 Alliance, you need to accrue enough Alliance (Civ6).png Alliance points (80 points to reach level 2 and 240 more points to reach level 3). Two nations that are allies of one another always get 1 Alliance (Civ6).png Alliance point per turn passively, but there are ways to help speed up this process:

  • 0.25 points per turn from sending at least one Trade Route Trade Route to them (this gets increased to 0.5 per turn under Cleopatra).
  • 0.25 points per turn from receiving at least one Trade Route Trade Route from them (this also gets increased to 0.5 per turn under Cleopatra).
  • 0.25 points per turn if you have the Wisselbanken or Arsenal of Democracy policy cards.
  • 0.25 points per turn if they have the Wisselbanken or Arsenal of Democracy policy cards.
  • 0.5 points per turn if you are an ally of Gilgamesh and you are both at war with the same enemy. (Does not have to be a Joint War).
  • Note: In Gathering Storm, the Arsenal of Democracy policy card was removed and its effects got transferred to the Democracy government. Therefore, Alliance points will grow by 0.25 extra if one party has adopted Democracy and by 0.5 extra if both have adopted Democracy.

As outlined above, all of these actions have symmetric effects on both parties of the Alliance (Civ6).png Alliance, so they will always both accrue Alliance points at the same rate, and reach higher levels of Alliance (Civ6).png Alliance at the same time.

An Alliance expires after 30 turns on Standard speed, which then needs to be proposed and signed again (Friendship also needs to be declared again as well). If historical allies (nations that had at least level 2 Alliance (Civ6).png Alliance or above in the past) denounce or declare war on one another, a Betrayal Emergency will be triggered.

Related achievements[]

Adamantine Confederacy
Adamantine Confederacy
As Poundmaker, have an active Alliance of every type.
Phrase that directly means 'unbreakable alliance'.
Achieve the maximum Alliance level with Gilgamesh
A term used to refer to a close friendship between two guys.

Civilization VI [edit]
Rise and FallGathering StormNew Frontier Pass

AgendasBeliefsBuildings (Unique buildings) • City-statesCivicsCivilizationsCompetitions GS-Only.pngDistrictsImprovementsLeadersNatural wondersPantheonsPolicy cardsProjectsPromotionsReligionsResourcesTechnologiesTerrainsUnits (Unique units) • Wonders

AgendaAge R&F-Only.png (Historic Moment R&F-Only.pngTimeline R&F-Only.png) • BarbariansBoostsBuildingCity (AmenitiesCapitalGovernor R&F-Only.pngHousingLoyalty R&F-Only.pngPopulation) • City-state (EnvoySuzerain) • CivicClimate GS-Only.png (Disaster) • Combat (Air combatCity combatFlanking and SupportZone of control) • Competition GS-Only.pngDifficulty levelDiplomacy (AllianceDiplomatic Visibility and GossipEmergency R&F-Only.pngEspionageGrievances GS-Only.pngWarmongeringWorld Congress GS-Only.png) • DistrictEraGovernmentGreat PeopleGreat WorkImprovementMap (AppealBordersContinentTile) • Natural wonderPolicy cardProjectPromotionReligion (Pantheon) • ResourceSpeedTechnologyTerrainTrade RouteUnit (MovementRangeSightStrength) • VictoryWar wearinessWonder

DLCGame modeModdingPersona PacksScenariosSoundtrackStarting a new gameSteam AchievementsSteam trading cardsUpdates

R&F-Only.png Added in the Rise and Fall expansion pack.
GS-Only.png Added in the Gathering Storm expansion pack.