Difference between revisions of "Territories"

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[[File:1.3 territories map.png|thumb|500px|A paintable map of territories in 1.3.x]]
[[File:Territories map.png|thumb|500px|A paintable map of territories.]]
'''Territories''' are the smallest unit of land in ''Imperator: Rome''. Territories are grouped into '''[[provinces]]''', and provinces are grouped into '''[[region]]s'''.
'''Territories''' are the smallest unit of land in ''Imperator: Rome''. Territories are grouped into '''[[provinces]]''', and provinces are grouped into '''[[region]]s'''.

Revision as of 09:17, 20 December 2019

Imperator: Rome tutorial #3 - pops and cities.
A paintable map of territories.

Territories are the smallest unit of land in Imperator: Rome. Territories are grouped into provinces, and provinces are grouped into regions.

Territory mechanics


  • Each territory has a given terrain type.
  • Each territory produces one item of a single type of trade good for its province.
  • Each territory has a culture and religion; Newborn pops start with them, otherwise these are completely irrelevant.
  • Coastal territories can have a port.
  • Each nation has a capital.
  • Starting civilization value, starting number of pops including their social group, culture and religion, etc.
  • Some territories (usually major cities) have special unique modifiers. See Unique City Modifiers


  • The most populous territory in a province at a given time is the provincial capital.
  • Each territory has its own #civilization value.
  • Each territory has a number of Population (pops) living in it.
  • Each territory can have a number of Buildings.
  • Each territory generates Unrest, affecting province loyalty.


  • Each territory has its own supply limit.
  • Each port has a chance to spawn pirates in an adjacent sea zone.

These actions can be performed from the territory menu:

  • Cohort recruitment (some units are restricted by the availability of strategic trade goods in the city's province).
  • Colonization.

Territory categories


Settlements represent a sparsely populated area of land, settlements have penalties to output, migration speed, and poptype ratio. Settlements only support one building, but have their own unique set of powerful buildings, so you can specialize them accordingly.


Cities have a large bonus to population capacity, and will act as focal urban centers for your empire. Cities Have a higher population and make your freemen and citizens happier, but require more slaves to make a trade good production - they will tend to consume, rather than create, resources. New cities can be founded from settlements, allowing you to shape the world to your own desire.


When a city that is a provincial capital reaches 80 pops, they can be designated as metropolises (for 400 Gold and 100 Political Influence) which are considered the peak of a city’s urban evolution. A metropolis does not have access to any unique buildings (instead using the same buildings as cities), but will improve living conditions for certain pop classes, as well as boost population capacity.

Provincial capital

Every province owned by a nation has a provincial capital (if a province is split over 2 nations each nation has a separate provincial capital), it is necessary to occupy this province to demand the entire province in a peace deal. If the (de)centralize governor policy has been selected in a given province this will make the migration attraction of the provincial capital go up or down respectively.

Each nation also has a national capital. All pops in the national capital have a +25% output modifier (stacking with the capital province and region modifiers). The national capital produces more food, can house more people, have 1 more building, assimilates and converts pops faster and is more attractive for migration.

Ports and piracy

Ports (indicated by a lighthouse and circling seagulls overhead) are the only cities were ships can dock and get built. Locations of port cities are fixed. Uncolonized provinces do not have a lighthouse icon, but all ports have seagulls flying around them and so can be seen that way.

Each port city has a monthly chance to spawn pirates in an adjacent sea zone, based on the number of trade routes (both incoming and outgoing) in the city's province. Each trade route beyond the first increases the chance by +0.1%, while each trireme docked in the city decreases it by -0.1%.

If pirates spawn, they will be a universally hostile fleet, which will blockade all port cities adjacent to their sea zone, lowering commerce income in their provinces.

Some pirate fleets already exist at the start of the game.

Terrain types

Name Modifiers Description
Terrain desert big.png Desert
  • Local population growth.pngLocal Population Growth: -0.25%
  • Attrition.pngAttrition: +1
  • Movement Cost: +10%
Arid, sandy plains stretch as far as the eye can see in every direction.
Terrain farmland big.png Farmland
  • Local population growth.pngLocal Population Growth: +0.1%
  • Slaves needed for Local Surplus: -2
This fine arable land is dotted with small clusters of fields, orchards, and grazing livestock.
Terrain forest big.png Forest
  • Attackers get a -1 penalty to their dice rolls.
  • Local population growth.png Local Population Growth: -0.1%
  • Movement Cost: +30%
A densely wooded place, forest is often quite an obstacle for passing armies.
Terrain hills big.png Hills
  • Attackers get a -1 penalty to their dice rolls.
  • Local population growth.pngLocal Population Growth: -0.1%
  • Movement Cost: +20%
This place comprises a series of shallow inclines and rolling hills.
Terrain jungle big.png Jungle
  • Local population growth.pngLocal Population Growth: -0.2%
  • Supply limit.pngSupply Limit: -50%
  • Movement Cost: +50%
Verdant, humid jungle, packed with dense vegetation, can be slow going for those who are unused to it.
Terrain marsh big.png Marsh
  • Attackers get a -1 penalty to their dice rolls.
  • Local population growth.pngLocal Population Growth: -0.1%
  • Supply limit.pngSupply Limit: -50%
  • Movement Cost: +50%
Waterlogged and often dangerous, marshland is hard to navigate, and even more difficult to inhabit.
Terrain mountain big.png Mountains
  • Attackers get a -2 penalty to their dice rolls.
  • Local population growth.png Local Population Growth: -0.2%
  • Supply limit.png Supply Limit: -50%
  • Movement Cost: +80%
Rocky, steep and treacherous, mountainous terrain can prove particularly difficult to navigate.
Terrain plains big.png Plains None A sparsely forested place, consisting of sweeping tracts of flat land.

Supply limit

The supply limit determines whether a given army suffers attrition. Base Supply limit.pngSupply Limit is 5 + 0.5 per pop in the city. It is then multipled by Supply Limit Efficiency, the base value of which is 100%, and which can be further modified by the following:

Type Modifier Value
City feature Terrain types: Mountains / Marsh / Jungle -50%
Civilization Value +2% per point
Being the city's owner +25%
Trade goods Vegetables in the province +10%
Surplus of Vegetables in the province
(only affects the province's capital city)
+2.5% per surplus
Invention Supernumerarii (lvl 1) +10%
Fighting Season (lvl 4) +10%
Logistics Division (lvl 11) +10%
Delayed Baggage Train (lvl 15) +25%
Central Reserve (lvl 19) +25%
Diplomacy Having military access to the city +10%

Civilization value

A city's civilization value represents its level of infrastructure and urbanization and is the biggest contributor to pop happiness.

The current civilization value of the capital determines whether a state can change its type of government.

The Civilization value adjusts automatically per month. Its rate of growth can be affected by modifiers given by e.g. laws or inventions. The maximum possible civilization value a city can have is determined by the state the city belongs to. All owned cities will slowly gravitate towards this value if they are below it, and slightly more quickly towards it if they are above it. Positive civilization growth can also never push the local value above that of your capital.

A city's Civilization Value scales between 0 and 100, with each point granting the following local effects:

  • Citizen Happiness: +1%
  • Freemen Happiness: +0.7%
  • Tribesmen Happiness: -0.5%
  • Barbarian Growth: -0.005
  • Population Growth: +0.5%
  • Supply Limit: +0.02
  • Population Capacity: +0.1
  • Migration Attraction: +0.1
Civilization Value Citizen Happiness Freemen Happiness Tribesmen Happiness Barbarian Growth Population Growth Supply Limit
+50 +50% +35% -25% -0.25 +25% +10
+100 +100% +70% -50% -0.5 +50% +20

The civilization value grows naturally over time more or less quickly depending on your laws and inventions, among others. It is limited, however, by a cap dependent on several factors. Civilization will not grow past this threshold, and if the limit falls below the current Civilization Value, it will decrease monthly at a fixed rate of -1% until it meets the cap again.

Scope Source Civilization Cap Maximum Increase
National Base +10%
Settled Tribe Gov Bonus +10%
Federated Tribe +15%
Monarchy or Republic +30%
Advanced Monarchies or Republics +35%
Empire +40%
Centralization Level +0.1% per Point +10% at 100%
Oratory Advance +2% per Advance Level +40% at Level 20
State Religion National Idea +5%
Rights of Man or Rights of Birth Code of Rights Tribal Law +5%
Provincial Gemstones Surplus in Capital +5% Unique
Gemstones Export Bonus +2.5% Unique
Marble Provincial Bonus +2% Unique
Marble Provincial Surplus Bonus +1% Stackable
Glass Provincial Bonus +2% Unique
Glass Provincial Surplus Bonus +1% Stackable
Local Urban Development +1% per Level Stacks until the general Civilization of the Territory reaches 60
Emergent Center of Civilization +5%
Center of Civilization +10%
Emergent Capital +10%
  • Government bonuses are, of course, exclusive to each other.
  • The Centers of Civilization and Emergent Capital modifiers are obtained in the Capital Territory by forming regional tags (ex: Saxonia, Gaul, Albion...)
Domestic policy State Characters Attributes Position Culture Government Laws National ideas Rebellion Religion Technology
Economic policy Buildings Economy Population Trade Trade goods Food
Provinces Region Province Territories Colonization
Military Military traditions Army Siege Assault Land units Land warfare Naval warfare
Foreign policy Treaties Warfare Casus belli Diplomacy Subject nations Barbarians
Script Events Decisions Missions