Jonathan Doran and Ian Parberry, "A Prototype Quest Generator Based on a Structural Analysis of Quests from Four MMORPGs", Proceedings of the Second International Workshop on Procedural Content Generation in Games, pp. 1-8, Bordeaux, France, 2011.
An analysis of over 750 quests from four popular RPGs (Eve Online, World of Warcraft, Everquest, and Vanguard: Saga of Heroes) reveals that RPG quests appear to share a com- mon structure. We propose a classification of RPG quests based on this structure, and describe a prototype quest gen- erator based on that classification. Our aim is to procedu- rally generate quests that are complex, multi-leveled, and plausible to players of RPGs. We analyze a nontrivial quest from Everquest and one from our prototype quest generator for comparison.