The Doomgrinder
The Doomgrinder is an adventure module for the "Dungeons & Dragons" fantasy roleplaying game , set in the game's "World of Greyhawk" campaign setting . 
<triplet> The Doomgrinder <subj> adventure module <obj> instance of <triplet> World of Greyhawk <subj> Dungeons & Dragons <obj> game mechanics <subj> campaign setting <obj> instance of