Population, also known as population cap, is a limit to the total number of units a player can have. It is normally determined by the number of Town Centers and Houses that the player has built. In many games, the population cap can be adjusted in the settings tab in the main menu. Except in Age of Empires III, players can go over the population cap by converting units.
Age of Empires Edit
Age of Empires II Edit
In Age of Empires II, the maximum population cap is 200. In The Forgotten, however, the population cap can be set up to 500. The Goths can gain +10 population in the Imperial Age due to their civilization bonus.
Buildings providing population room to all civilizations:
- House (5 for all civilizations, 10 for the Incas)
- Town Center (5 for all civilizations, 10 for the Chinese)
- Castle (20)
Buildings providing additional population room to the Slavs and their allies:
If any of these buildings is destroyed, the provided population room is lost, with the exception of the Mongols, who retain the population room (just of Houses, though) once Nomads is researched. The Huns start the game with their population cap at the maximum without the need to build Houses.
Age of Mythology Edit
In Age of Mythology, the total population cap is 300. In similar fashion to Age of Empires III, military, mythical and naval units also take up greater amounts of population space. Typically, economic units such as Fishing Ships and Villagers (except Atlantean Citizens) take one population slot. Most foot military units (such as infantry or archers) take two population slots. Most mounted units such as cavalry take 3. Siege weapons also take 3 to 5 population slots. Atlantean Citizens take 3 slots (4 for the Hero version). Atlantean units converted to Heroes take an additional population slot. Myth unit population slots ranges from 2 to 5. Titans take 20 population slots.
It is possible to exceed the population limit by gaining neutral units or Gaia units in campaign scenarios and custom scenario. Another instance on where the player can exceed the population limit is in the campaign—when a campaign hero faints, then the player reaches the population limit by creating regular units; after the player manages to revive the said Hero, the population limit would be exceeded. Same concept applies with Automata—when the player has reached the population limit, then some of the player's fallen Automata have been fully repaired, population limit is also exceeded.
Unit conversion, however, will not be possible if there is not enough room population slot. Instead, the Priest will just keep converting the subject until enough population slot corresponding to that unit being converted has been vacated (i.e. when the player loses some units), that's the only time the subject could be possibly converted.
Buildings which provide population to the player are as follows:
- Town Center (15, 20 for Fortified Town Center)
- Citadel Center (25, 30 for Fortified Citadel) (Set or Ra only, under Sekhmet)
- House (10) (except Atlanteans)
- Manor (20)(Atlanteans only)
Atlanteans can build a maximum of 5 Manors, while other cultures can build a maximum of 10 Houses, which will equivalent to 100 population slots. Assuming the player has the starting Town Center (without the Fortified Town Center upgrade), the initial population limit should be 115. The population limit can be increased by capturing more Settlement, until enough has been built to reach the game population limit of 300.
The Relic Eye of Horus increases population limit by 3 per Town Center.
Age of Empires III Edit
In Age of Empires III, the population cap is 200. Additionally, the Chinese civilization's population cap is 220 and the Iroquois can reach 225 (if a maximum amount of villagers commit the population dance in the Fire Pit). In Age of Empires I and II, one unit takes up one population slot, the only exception being Sheep and Turkeys. However, in Age of Empires III, powerful units, such as most cavalry, Mercenaries, and artillery take up more population slots. Ships and native (Trading Post) units have their own separate population cap, with the exception of Fishing Ships and native Villagers. In contrast to previous titles, multiple selected units are represented by a single unit icon on the interface.