Authority is a concept that inherently limits your expansion in a meaningful way and makes you reconsider your diplomacy. Basically, it ties your government, governors and diplomatic relations to your empire's happiness.
Authority is a country-wide mechanic; it ties to your civ as a whole, not to any particular city. It has two values, consumption and maximum.
Base consumption value is 0. It increases by 1 for every city you control (if the city has 10+ population, 2 authority consumption instead). Also, every 125 grievances against you (summed up across all other civs) increase authority consumption by 1 (while grievances are present). Being a target of hostile emergency (military or religious) also increases authority consumption by 1, while emergency is active.
Base authority maximum is 2 (from palace). Every government tier increases authority maximum by 2. Every established governor increases authority maximum by 1 if established in a friendly city (if a governor is fully promoted, +3 authority maximum instead). Government plaza adds 2 authority maximum. Also, every active alliance increases authority maximum by 1 for both sides (if alliance is level 3, +2 authority maximum instead). Authority maximum can also be increased by certain policies, great people and wonders (TBD). Certain leaders have base authority maximum increased (TBD).
So how does authority affect you? Here's how it works:
Authority is a country-wide mechanic; it ties to your civ as a whole, not to any particular city. It has two values, consumption and maximum.
Base consumption value is 0. It increases by 1 for every city you control (if the city has 10+ population, 2 authority consumption instead). Also, every 125 grievances against you (summed up across all other civs) increase authority consumption by 1 (while grievances are present). Being a target of hostile emergency (military or religious) also increases authority consumption by 1, while emergency is active.
Base authority maximum is 2 (from palace). Every government tier increases authority maximum by 2. Every established governor increases authority maximum by 1 if established in a friendly city (if a governor is fully promoted, +3 authority maximum instead). Government plaza adds 2 authority maximum. Also, every active alliance increases authority maximum by 1 for both sides (if alliance is level 3, +2 authority maximum instead). Authority maximum can also be increased by certain policies, great people and wonders (TBD). Certain leaders have base authority maximum increased (TBD).
So how does authority affect you? Here's how it works:
- If consumption is less than or equal to maximum, nothing happens;
- If consumption is greater than maximum, it is added as a negative amenity to all cities. For example, if your authority consumption is 10 and your maximum is 8, all your cities suffer -2 Amenity.
- It encourages internal development prior to expansion
- It encourages managing your diplomatic relations with civs (because having alliances helps you develop more cities, whilst being an extensive warmonger hinders your ability to control your conquered cities)
- It makes grievances meaningful in multiplayer