== Nuclear War ==
There is a very small chance that an atomic or early space age civilization will become engaged in a nuclear war. The chance is increased with aggressive observation or covert infiltrations and is independent from the aforementioned events. It can happen even if there is no observation post in orbit but you will not be notified of it. If a nuclear war breaks out without intervention the civilization will always wipe itself out. There is a 75% chance the world will be turned into a tomb world and a 25% chance it will become a toxic world.
== Technological Enlightenment Events ==