Thousands of years ago, beings from an ancient civilization briefly lived on Athyr, fleeing from the extra-dimensional entities they had accidentally unleashed into our reality. Their devices and technology have become things of myth, but the snippets of knowledge they left gave rise to obscene cults, each of them tied to one of those entities that are destroying all life in the universe.

Over the last few centuries, the cults have risen in power and gained influence. Their rituals are becoming increasingly more dangerous and corrupt the seven regions of Athyr, from the arid deserts of Ethennia to the barren lands of the Sundered Wastes, the northern empire of Roshan, the mysterious jungles of Ishta, and the rivalling feudal kingdoms of Evandyr.

In every place where the cults are rising, lands are changing, transforming into twisted versions of what they formerly looked like. Bizarre, never-seen-before weather phenomena and diseases are plaguing the lands, seas and skies. Animals are degenerating into perverted abominations. Monsters from other realities are finding their way through the breaches in space-time. Seers prophesize doom, but no one knows what exactly is fated to happen.

Times are dire, options seem to be running out, and even the gods don’t seem inclined to answer their followers’ calls for help. From damp underground dungeons to the royal courts, rife with intrigue; from ancient tombs hidden in jungle-covered pyramids to the open seas; from prosperous towns with gold-plated roofs to poor fisherman villages; and from monster-infested mountain ranges to the deepest of oceans, heroes are needed, for there is much adventure to be had in Athyr, and even more treasure to be gained, but danger lurks around every corner and only the rare few can be trusted completely.

Enter a world of both tremendous wonder and unparalleled danger. Enter the world of Blood and Doom!