For each unit of Population, two (2) units of food are consumed . For a city's population to remain stable, Citizens must work tiles such that the total yield of Food is equal to the amount of food consumed .
If is less than , such that there is a negative net food yield , then the city will shrink, and its food reserves will be consumed. If all food reserves are consumed, then the city will enter Starvation, and the city will lose a unit of Population.
If is greater than , then the food bar will be filled; if it is totally filled, then the city's population will grow by one (1). If the city contains a Granary, then the food bar will start at 50% after growth.
Food is produced inherently by all types of terrain with these exceptions:
Additional food may be generated by these tile improvements:
All food resources ( Bananas, Clams, Corn, Cows, Crabs, Deer, Fish, Pigs, Rice, Sheep, and Wheat) generate food. These resources add +1 Food to their tile even before they are improved and some more when they are improved. The luxury resources Sugar () and Whales () generate food without any improvements, as well. In addition, Spices () and Wine () generate food when improved.
|Civilization IV |
|Warlords • Beyond the Sword • Colonization†|
|† Total conversion remake of the game Sid Meier's Colonization using Civilization IV engine|