From publisher blurb:
This Game Master’s Guide contains everything an Against the Darkmaster GM needs to run and prepare their epic campaigns. We’ve collected all the GM-facing rules in the Against the Darkmaster Core Rules and the monsters in the Bestiary to give you a book that would be easier to carry around and reference during play.
Craft a living, breathing world for the players to explore. Weave the heroes’ deeds into a grandiose tale, inspired by your favorite fantasy sagas. Create your own Darkmaster, complete with world-shaking powers and legions of shadowy minions. Unleash the power of your imagination!
Featuring
Detailed guidelines on how to run and prepare your adventures
Rules for creating and handling opponents and other NPCs
Traveling and Hazards rules
Darkmaster creation rules
Optional rules for customizing your campaign
Magic Items and other rewards
A comprehensive Bestiary