City

Cities are the building blocks of nations. Each city has its own infrastructure, land area, improvements, and stats. Cities provide population as a taxpayer base for a nation. Resources are produced via improvements in cities.

Mechanics

Cities serve two basic functions: increasing and maintaining population and harvesting/manufacturing resources.

Population

Population is determined by a number of factors, including infrastructure, land, improvements, population density, and city age. These control the commerce, crime, and disease factors that determine final population count for a city.

Infrastructure

Infrastructure is what gives a city its population. Before other factors are applied, the formula for population by infrastructure is:

$Base\ Population = Infrastructure \times 100$

The cost of infrastructure increases exponentially per level, with a base price of $300. The formula for infrastructure cost is:

$Cost\ Per\ Level=0.01(X-10)^{1.95}+300$

Disease

Disease is a negative factor applied to a city's population. It is caused by high population density (buying more infrastructure) and lowered by decreasing population density (buying more land). This means that for each city, there will have to be a balance between the amount of infrastructure and the amount of land, in order to control Disease.

Hospitals are an improvement that lowers Disease directly and can allow a city to have more infrastructure, than would normally be supported by the amount of land.

See Disease for more information, including all formulae related to Disease.

Crime

Crime is another negative factor applied to a city's population. It is caused by a high population and poverty. Crime can be reduced by building Police Stations and increasing average income. The formula for crime is:

$Crime\%={\frac {(103-Commerce)^{2}+(Infrastructure\times 100)}{111111}}$

Crime cannot exceed 100 nor go below 0. The amount of people removed from the base population figure is equal to:

Crime Deaths = ((Crime/10)*(Infrastructure*100)-25)

Crime Deaths cannot be less than 0.

Age

The age of a city increases its population by a percentage. Age is the last variable factored into city population, and is factored in as follows:

Age Bonus = (City Population * (1 + (City Age In Days/3000)))

Constructing New Cities

Constructing new cities occurs as nations grow and no longer wish to expand within the cities they currently possess. New cities are expensive to build, but infrastructure and land in brand new cities is cheap. The formula for a new city cost is:

$City\ Cost=50000(X-1)^{3}+150000X+75000$

where X is the current number of cities.

[This total price is decreased by 5% if you have the Republic bonus.]

Cost of New Cities

Current Cities	Cost ($)	Cost with Republic
1	$225,000	$213,750
2	$425,000	$403,750
3	$925,000	$878,750
4	$2,025,000	$1,923,750
5	$4,025,000	$3,823,750
6	$7,225,000	$6,863,750
7	$11,925,000	$11,328,750
8	$18,425,000	$17,503,750
9	$27,025,000	$25,673,750
10	$38,025,000	$36,123,750
11	$51,725,000	$43,138,750
12	$68,425,000	$65,003,750
13	$88,425,000	$84,003,750
14	$112,025,000	$106,423,750
15	$139,525,000	$132,548,750