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# System prepended metadata

title: Population and Territory

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# Population and Territory 
:::warning
### Under Revision
This section is not considered a finished proposal. Discuss any changes at liberty.
:::

## Population
Population in KSPRP-0 is generally abstracted. The total population consists of several numbers:

- Base Population (set by country's player at the start in a small range between 7.5 and 15 million people)
- Current Population (can be modified by particularly painful wars, especially nuclear)
- Population Multiplier

The population multiplier is based on the square root of how much the population modifier has grown since the start. Multiplied by the base population, this is the population that the Current Population will tend towards.

:::warning
Should this be just a roleplay thing? Should it affect mod. growth once you get nuked to oblivion? I don't know
:::

## Territory
Your population is not concentrated in one place. Every country is evenly split between rural and urban populations. Rural populations are considered to be evenly distributed across all of your rural areas, while the urban population is considered to be split between 5 urban centers (cities) positioned based on your own selection. The location of these urban centers is important, since buildings placed further away from cities incur an IP cost (at the benefit of being less vulnerable to attacks and espionage). This IP cost is proportional to the distance from the city the building is assigned to (by default the closest).

The population of the 5 urban centers is relative to the total urban population. The largest city (your capital) has 2/5ths of the urban population; the second and third largest cities have 1/5th, the fourth and fifth cities have 1/10th of your urban population.

*Main article: ?Nukes?*

One concrete effect is that during bombardments (nuclear or conventional), cities are far more vulnerable. The exact casualties will depend on the population of the city, the expected density (a value to be determined) and the yield of the bomb. On the other hand, rural populations are less vulnerable; for the purposes of being bombed, a nuke launched at a random point in a rural area will be assumed to be hitting a somewhat denser area (up to 10 times the calculated population density) for casualty calculations.