Stability is a resource in Humankind that represents the public order. It is represented as a percentage and thus cannot be below 0% or over 100%. Each of an Empire's Cities has a 
Stability value, along with one value for the entire Empire. Low Stability can lead to your 
Population deserting your Cities or even revolution.
Contents
City stability[]
Each City has a Stability value. Most changes to a City's Stability do not directly impact the actual Stability but instead, modify the target Stability. The actual Stability of the City trends towards this value at a base rate of 5 Stability per 
turn. The negative trend can be reduced to -4 Stability per turn with the Forfeiture option of the Punishment Civic. All Districts (except for the Commons Quarter, Garrison, Resource Extractors, and certain Emblematic Districts) give -10 Stability, and each attached Territories on a City gives -20 Stability. Certain affinities (namely, 
Builder and 
Agrarian), provide instant Stability, increasing the actual Stability of the City whenever a condition is fulfilled.
Calculating surplus stability[]
The Base Value of a City's Stability is a variable that can be used to calculate a City's surplus, or extra Stability above 100%. It is listed in the Stability tooltip of the city screen, under Gains or Losses. Use this to check if a City can handle more districts or territories while maintaining Settled status.
| Example Base Value | Surplus Stability
|
Total Stability
|
|---|---|---|
| 40 | 0 | ≤ 100% |
| 0 | 40 | 140% |
| -100 | 140 | 240% |
City stability ranges[]
Mutinous[]
Unit rebelled from Byblos because of low Stability
0-29% Stability
- Cannot build new Districts. Districts in the construction queue have their construction frozen
-
Population will desert your City, turning into crisis Independent People. The delay between desertions can be increased with the Physical Punishment option of the Punishment Civic - Higher likelihood of negative Narrative Events
Strained[]
30-90% Stability
- Equal chance of negative and positive Narrative Events
- +1 Influence per Population
Settled[]
91-100% Stability
- Higher likelihood of positive Narrative Events
- +2 Influence per Population
Stability effects on a city[]
- +4 Stability per Luxury on a City's Main Plaza.
- +5 Stability per Unit within the City's borders. (only the largest army counts)
- +5 Stability on Garrison (can be improved)
- +5 Stability on Commons per adjacent Base Districts
- +20 Stability per Holy Site and Wonder
- -20 Stability per attachedTerritory
- -10 Stability per most Districts
- -1 Stability per turn (adds up each turn), when Influence per turn is negative
- -1 Stability per turn (adds up each turn), when Money per turn is negative
- See more in: City Statuses
Empire stability[]
The global Stability of an Empire depends on the Stability of each of its cities. If the Empire Stability is low for several turns, a Revolution will happen, which will slow down your economy and reset all your civics.
