The fiend and the forge / Neff, Henry H

The world is reduced to a preindustrial nightmare when the villainous Astaroth uses the Book of Origins to reshape history, and it is up to Max McDaniels to oppose the new order and restore mankind to its former glory.

With the Book of Origins, the evil Astaroth has been able to change history and rule the world. While most people work as slaves in four demonic kingdoms, Astaroth allows the residents of Rowan to thrive. Max McDaniels is not satisfied to obey the evil Astaroth in exchange for life in Rowan, so he sets out to explore the altered world. His travels bring many adventures and perhaps a calling to right the wrongs perpetrated by Astaroth.