1. Mass extinction - 2nd Ordovician

It all began with climate change. This was not only the beginning, but the catalyst to extinction of life on earth. Many countries lost most if not all of their territories, and both developing and advanced countries alike lost their ability to function as nations, leaving behind only 4.2 billion refugees. Mass immigration led to endless disputes on the borders. Though unconfirmed, rumors of a bloody massacre were widely circulated.

Overnight, the existence of mankind fell to ashes. Although there is no clear record or explanation of what actually happened and what or who caused it, one thing is for certain: that on that day, dozens of nuclear bombs were dropped from the sky, threatening earth's ability to harbor life.