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[[Category:Planets]]
 
[[Category:Planets]]
 
[[Category:Data and formulas]]
 
[[Category:Data and formulas]]
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[[Category:Galactic ranking]]

Revision as of 14:43, 13 March 2006

Population represents the inhabitants of the planets. The population, and the tax revenue they generate, represents the foundation of the economy in Galactic Civilizations II. The population of a planet also generates influence points proportional to how many inhabitants there are.

Population growth is affected by the approval rating. The maximum growth rate in a turn is 200 million inhabitants per turn per planet. The maximum population on a planet is determined by the amount of food the planet is generating. Building farms will allow the population to expand. Each planet also has a maximum population based on planet quality. Take the planet quality, add one to it, and raise the resulting sum to the power of 3. Multiply that result by 20 million to calculate the maximum population (assuming sufficient food). The absolute population limit for a planet is 100 billion.

Formula for Calculating Maximum Population

Maximum Population (in billions) = 0.02 * ( ( PQ + 1 ) ^ 3 )

PQ = Planet Quality

  • This figure may only reflect maximum growth-achievable population.

Formula for Determining Bonus Population Growth

As posted by Frogboy:

if(lPopulationChange > 100)

lPopulationChange = 100;

if(lMorale >75)

lPopulationChange *=1.25;

if(lMorale == 100)

lPopulationChange *=2;

fPopulationBonus = 1.0 + ((float) pCiv->GetAbility(ABILITY_POPULATIONGROWTH)/ 100.0f);

lPopulationChange = lPopulationChange * fPopulationBonus;

Rough Numbers

Maximum Population per Planet quality in billions:

  • PQ 4 = 2.6 b.
  • PQ 5 = 4.3 b.
  • PQ 6 = 6.9 b.
  • PQ 7 = 10.4 b.
  • PQ 8 = 14.6 b.
  • PQ 9 = 20.2 b.
  • PQ 10 = 26.6 b.
  • PQ 11 = 34.6 b.
  • PQ 12 = 44 b.
  • PQ 13 = 55 b.
  • PQ 14 = 67.6 b.
  • PQ 15 = 82 b.
  • PQ 16 = 98.2 b.
  • PQ 17+ = 100 b.


Note: Civilization Capital (10mt/week) Initial Colony (5mt/week)

The chart below assumes that the planet has an initial colony and tells you the number of farms needed to reach the population cap (which might not be the optimal configuration).

  • one asterisk indicates that there is no need to upgrade.
  • two asterisks indicate that an equal number of lower tech farms will suffice.
  • Note: Maximum Population might not be desirable due to morale and approval. At the same time, a player might need it to get additional tax revenue or influence.
Population/Farm Relationship
PQ Population Population Need to be fed Basic Farm (4mt/week) Xeno Farming (6mt/week) Intensive Farming (8mt/week) Advanced Farming (8mt/week ??)
4 2.6 0* 0 0 0 0
5 4.3 0* 0 0 0 0
6 6.9 1.9 1* 1** 1** 0
7 10.4 5.4 2 1* 1** 0
8 14.6 9.6 3 2* 1** 0
9 20.2 15.2 4 3 2 0
10 21.6 16.6 5 3* 3** 0
11 34.6 29.6 8 5 4 0
12 44 39 10 7 5 0
13 55 50 13 9 7 0
14 67.6 62.6 16 11 8 0
15 82 77 19 13 10 0
16 98.2 93.2 24 16 12 0
17+ 100 95 24 16 12 0