Editing Civilization: Call to Power (section)

===Happiness===
While playing the game, the happiness level of the citizens must be maintained. If a city is far away from the capital, is overcrowded, polluted, overworked, starved or underpaid, the happiness level will drop with riots and revolts occurring. Cities also experience unhappiness during wartime, especially if they have just been conquered by another empire. Many [[terrorist]] units can decrease the happiness of an enemy city. For example, if a city is "infected", it will lose both population and happiness. If the happiness' level goes under 75, then the city is in danger of rioting. If a city riots, it does not produce any work during that turn. If happiness in cities continues to decline, revolution becomes a possibility. If that happens, the city's inhabitants become "barbarians", or change nationality to another country if another country has the Egalitarian Act Wonder. However, if the happiness of a city reaches very high levels, it "celebrates". Some buildings can increase happiness (e.g. temples, cathedrals, body transplants), and wonders can increase happiness (e.g. Immunity Chip, [[Ramayana]]).