Population Units

A city's population consists of population units , which can be assigned as workers to produce FIDSI resources every turn. The amount of each FIDSI resource produced by a worker in a city starts at 4, with the exception of Influence , which starts at 2, due to the City Hall improvement automatically built when founding a city. Worker production can be increased with city improvements, empire plan policies, and Hero Skills, Capacities, and Accessories.

Growth, Consumption, and Starvation[]

For all empires but the Broken Lords (see below), the generation of population units is organic. When positive, a city's total Food output is added to its growth stock every turn. When the growth stock reaches its upper limit, a new population unit is generated. For normal game speed this upper limit is determined by the equation 5 * ^2.75. So a city with 2 needs to have a stock of ~103 for the third to appear. And city with 3 needs to have a stock of ~226 for the fourth to appear. See Cities#Population Growth for more information.

Additionally, each population unit consumes 2 every turn, and a negative total Food output will subtract from the city's growth stock. When the growth stock reaches its lower limit (equal to the upper limit needed to get the current population), a population unit is removed from the city. Note that a city's population can never be reduced below 1 through starvation. Additionally, when producing a Settler, Food output is reduced to zero if you would otherwise have positive output. Producing a Settler with negative Food output will not increase your output to zero. Producing a Settler removes one population unit.

Broken Lords Population Units[]

Population unit mechanics work differently for the Broken Lords, as they cannot produce or consume Food. Population units can only be generated by buying out a population increase with Dust in the city screen. Population units are not generated organically by the Broken Lords and cannot be assigned as Food workers. Because of the lack of a Food growth stock, they are also immune to starvation.

Worker Production[]

Worker production can be increased in a variety of ways, but it's important to remember that these increases only apply to population units assigned as workers to the appropriate resource. A city improvement that increases Food production for each worker would have no effect on population units assigned as Dust workers, only those assigned as Food workers.

City Improvements[]

To simplify this section, and because some city improvements provide bonus "per " output for multiple resources, the following table will show by how much each of the city improvements increases the given resource per unit of population. Additionally, many of the listed improvements have other effects or conditions to be built not listed here.

Name	Era	+/	+/	+/	+/	+/
City Hall	I	4	4	4	4	2
Center for Minerology	I			5
Husbandry Center	I	5
Canal Locks	II		5
Glory of Empire	II					1
Public Granary	II	2
Advanced Alchemy Lab	III			3
Dust Depository	III				4
Large-Scale Aquatic Center	III			2
National Museum	III					2
Fungal Laboratory	III	5
Production Line	IV		3
Refrigeration Plant	IV	3
Wyrm Farm	IV	2
Altar of Channeling	IV				5
Altar of Transcendence	IV					5
Aura of Empire	IV					4
Imperial News Network	V	2	2	2	2	1

One improvement not listed on the table is Defensive Wards, which is something of a special case. While Defensive Wards also has a "per " effect, it increases a city's Fortification by 30 per rather than any of the FIDSI resources, and also doesn't require the to be assigned to any specific role for the effects to come into play; if a city has 10 and it builds this, it will get a bonus of 300 regardless of how those population units are assigned.

Empire Plan[]

By setting the "Economy and Population" branch of the Empire Plan to its first tier, all cities in your empire get +3 per .

Heroes[]

Heroes have three main avenue for increasing the "per " output of a city: Capacities, Skills, and Accessories.

Capacities[]

With the exception of the Slavery capacity, all capacities that increase the "per " output of a city have the name "[Resource] Efficiency X", where the resource is one of the FIDSI resources, and X is a number 1 through 3 that determines the effectiveness of the capacity.

Hero	Name	Effect
Lorekeeper Masargaka	Food Efficiency 1	+1 Food per on city. +1% Food per Hero's level on city.
Tlato Mosi Pakwa	Industry Efficiency 1	+1 Industry per on city. +1% Industry per Hero's level on city.
Ipsa Wacha Exid the Chosen Ululani Raui Specialized Polyp 2D	Industry Efficiency 2	+2 Industry per on city. +1% Industry per Hero's level on city.
Petrov Judit	Science Efficiency 2	+3 Science per on city. +1% Science per hero's level on city.
Commander Irjsko Lasmak	Science Efficiency 3	+4 Science per on city. +1% Science per hero's level on city.
Bela The Bat Syrav	Dust Efficiency 1	+1 Dust per on city. +1% Dust per hero's level on city.
Baron Joslyn Deyval Siryi Alastra Sable Deceiver Napog Dauda Skya Keeper Dabuo Ofosu	Dust Efficiency 2	+2 Dust per on city. +1% Dust per hero's level on city.
Lord Peyton Quinn Sable Deceiver Bayari Kulaa Jasah Murdap	Dust Efficiency 3	+3 Dust per on city. +1% Dust per hero's level on city.
Strio	Influence Efficiency 1	+1 Influence per on city +1% Influence per hero's level on city
Iracu Pali Inoa Specialized Polyp Q9	Influence Efficiency 2	+2 Influence per on city +1% Influence per hero's level on city
Feeds on Bones Long Fangs Queenslayer Ka-Riss	Slavery	Increases the "per " value for Food and Industry for each pacified village .

As an additional note, the Sway of the Master can be equipped on heroes to give them the Slavery capacity.

Skills[]

The only Hero skill that increases the "per " output of a city is the Cultists Hero skill "Impassioned Preacher", which provides +1 per for each of the FIDSI resources on the city per level of the skill, up to 3.

Accessories[]

The accessories that can be equipped to a Governor to increase a city's "per " output are the Tomes made of Titanium , Glassteel , Adamantian , and Palladian , which focus on Science , Dust , Industry , and Food respectively. They all require researching a specific technology to unlock.

Material	Tier		Effect	Unlocking Technology
Titanium	1	6	+1 per on city	Advanced Armor
Titanium	2	12	+2 per on city	Alchemical Armor
Titanium	3	24	+4 per on city	Exotic Armor
Glassteel	1	6	+1 per on city	Advanced Armor
Glassteel	2	12	+2 per on city	Alchemical Armor
Glassteel	3	24	+4 per on city	Exotic Armor
Adamantian	1	12	+1 per on city	Uncommon Armor
Adamantian	2	24	+2 per on city	Marvelous Armor
Adamantian	3	48	+4 per on city	Exceptional Armor
Palladian	1	12	+1 per on city	Uncommon Armor
Palladian	2	24	+2 per on city	Marvelous Armor
Palladian	3	48	+4 per on city	Exceptional Armor