Finno-Korean Hyper War

The Finno-Korean Hyper War was an armed conflict between the Finnish Khaganate and the Hwan Empire that lasted for approximately 2000 years. It brought about the end of the Hyper Era, the destruction of most human progress and most of the human population, being the most devastating war in history.

The war caused 8.074 billion casualties (over 90% of the human population at the time), of which 374 million were military and 7.7 billion were civilian.