Corruption is an empire wide effect that makes every planet in your empire a little less productive.
Corruption is growing with the size of your empire. The more planets you have got, the higher the corruption in your empire. The higher the corruption, the more food, production points, research points and planet-income are wasted on every planet.
However, you can influence the amount of corruption with your Reputation. A positive reputation will reduce the amount of corruption in your empire. A bad reputation on the other side will increase corruption even further!
Corruption is calculated as follows:
Empire-Wide-Corruption = Number-Of-Planets * 0.3 * (100 - (Reputation*2)) / 100
To find out your corruption, go to the Overview Screen. Under “Empire Overview”, your corruption and reputation are listed.
Note also that this corruption percentage may not be the corruption that is applied at all planets. The corruption applied to each planet is a function of population count. When a planet has reached 75% of its population limit, then it will reach the maximum corruption, i.e. the percentage listed in “Empire Overview”. The corruption in a planet with less than 75% population is calculated as follows:
Corruption-On-Planet = (4/3) * (Planet-Population / Max-Planet-Population) * Empire-Wide-Corruption
In order to avoid your empire grinding to a halt because of high corruption, corruption is capped at 40%. It is actually possible to reach negative corruption! This is the case if you reach a positive reputation of 50 or higher.
As stated above, corruption is growing with the size of your empire. You can however influence the amount of corruption in your empire quite considerably. Here are a few examples:
| Number of Planets | Reputation | Resulting Corruption |
|---|---|---|
| 20 | -10 | 7.2% |
| 20 | +10 | 4.8% |
| 50 | -20 | 21% |
| 50 | +20 | 9% |
| 50 | -50 | 30% |
| 100 | -50 | 60% (will be capped at 40%) |
| 100 | +30 | 12% (!) |