Corruption Modifier (Difficulty Level)
Determines the percentage of normal corruption experienced on the selected difficulty level. The default is 100% on all levels, meaning corruption will affect city production and wealth as it normally does in Civilization III. Setting this value lower or higher will reduce or amplify corruption proportionally.
NOTE: The Corruption Modifier has no effect on players whose government experiences catastrophic corruption, cities in civil disorder, or capital cities. In these situations, corruption is automatically set and no formula is calculated.