Purple Massacre

The Purple Massacre was a genocide of the Guyamen species, initiated by King Buford following his rise to power during the American Invasion. After the Americans' surrender, Buford took the throne and locked all surviving humans within the walled castles of his kingdom's cities. The native Guyamen roamed free in their thriving towns until King Buford unleashed a toxic purple gas on the entire continent, wiping out all life and ending the Guyamen species for good. The humans and Guyamen who were living inside the castles survived.

Since the Massacre, the towns once inhabited by the Guyamen now serve as communes for refugees and deserters, known as the hills.