When things go good or bad, some effects can appear in the city.
- Anarchy - when you change civics or magic doctrines;
- Healthy City - when health is above 10;
- Epidemy - when health is very low;
- Ecstatic - when people are very happy (happiness above 10) and when a city's Quality of Life goes up one level;
- French Strike - when happiness is below 0;
- Unhappiness - when happiness is very low;
- Local Warming - when pollution is greater than 0, there's a chance every round to trigger the Local Warming effect.
- Peculation - when people's Quality of Life is stagnating.
They all have limited duration.