The Cataclysm

The Cataclysm was a world-wide, extra-dimensional invasion of Midgard in 1796-1797 by unknown invaders. Starting in July, portals opened up in the sky around the planet, raining down fire and soldiers forged of iron. The catastrophe forced the supernatural beings who had been in hiding for centuries out into the mundane world, changing the world forever. Though the iron warriors were beaten back to their dimension, an uneasy co-existence between humans and the supernatural took hold.