Call of Cthulhu: Cold Fire Within by Christopher Smith Adair

A World Burning at Its Edges

Cold Fire Within is a sourcebook for HeroQuest Glorantha, the narrative-driven roleplaying game set in Greg Stafford's legendary Bronze Age fantasy world. Published by Chaosium, this is a book steeped in the mythic traditions that have defined Glorantha for decades — a setting where gods walk alongside mortals, cults shape society to its foundations, and every adventurer carries the weight of divine conflict in their blood. If you know Glorantha, you know that nothing here is simple, and nothing is small.

What's Inside

Written by Christopher Smith Adair, Cold Fire Within expands the tools available to HeroQuest Glorantha players and Game Masters with deep material rooted in the world's living mythology. The book explores the tension between opposing magical forces — the cold and the fire of the title — through the lens of Gloranthan cults, heroquesting, and the relationships between communities and their divine patrons. It provides Game Masters with rich campaign material and players with the cultural and mythological context needed to truly inhabit a Gloranthan character, not just play one.

Glorantha rewards players who lean into its lore, and Cold Fire Within is written for exactly those players — the ones who want their characters' choices to feel cosmically meaningful, who want the world to push back with history and consequence rather than simply presenting a dungeon to clear.

Who This Book Is For

This is not an entry point. Cold Fire Within is a supplement for existing HeroQuest Glorantha players and Game Masters who are ready to go deeper into the setting and its mythic systems. You'll need the HeroQuest Glorantha core rulebook to make full use of this material. It is best suited to groups with some familiarity with Gloranthan culture and cosmology — players who have already fallen into this world and are hungry for more of it. Veterans of RuneQuest who are exploring the HeroQuest system will find the Gloranthan grounding immediately familiar and the new material genuinely enriching.

Specifications