Cults of Prax, first printing 1979. Cover art by Anders Swenson
The RuneQuest supplement Cults of Prax was published by Chaosium forty years ago this year.
RPGNet describes Cults of Prax as the first-ever roleplaying game ‘splatbook’ (a ‘splatbook’ being a non-core sourcebook for an RPG that provides additional rules and material that can be used with the main system) — but its importance and influence goes far beyond that distinction. In a 2010 retrospective review Grognardia said Cults of Prax is
A true classic of the early days of the [tabletop roleplaying] hobby. …quite rightly considered one of the best treatments of religion in a fantasy RPG ever written and it’s certainly one of the most inspirational.
Written by gaming legends Steve Perrin, co-author of the RuneQuest RPG rules, and the late Greg Stafford, creator of the fantasy setting Glorantha, Cults of Prax’s ground-breaking presentation of gods and how they interact with the world through those who worship them still makes it one of the most influential and important works ever released for the RuneQuest RPG, and indeed for tabletop roleplaying games in general.