The Lost Willow and the Last Blade

RuneQuest is a fantasy role-playing game created by Steve Perrin, set in Greg Stafford's mythical world of Glorantha, and first published in 1978 by Chaosium. RuneQuest is notable for its system, designed around percentile dice and with an early implementation of skill rules, which became the basis of numerous other games.

Glorantha is a fantasy world created by Greg Stafford. It was first introduced in the board game White Bear and Red Moon (1975) by Chaosium, and thereafter in a number of other board, roleplaying and computer games, including RuneQuest and HeroQuest, as well as several works of fiction and the computer strategy game King of Dragon Pass. The Gloranthan world is characterised by its complex use of mythology, heavily influenced by the universalist approaches of Joseph Campbell and Mircea Eliade, its sword and sorcery ethos, its long and distinctive history as a setting for role-playing games, its community development and expansion, and (unusual among early American fantasy role-playing games) its relative lack of Tolkienesque influence. 

Cults of Prax is a a publication that describes in detail fifteen gods and their worshippers and assocaited cults.