The fixed governments in previous versions of Civilization are now replaced by a much more flexible Civics system, somewhat similar to the social engineering system in Alpha Centauri. The new system allows you to customize your government with various civics options that are classified into five categories: Government, Legal, Labor, Economy, and Religion. There are five options in each category. Players are free to choose any combination of civics.
Unless your leader is Spiritual, each time you change a civic, there will be a short period of anarchy. After each change, you cannot change civic again for a few turns.
NOTE: Information in this section is correct as of Beyond the Sword, version 3.13.
