In this research, the quests in WOW which immerse gamers in the narrative most effectively were used as main source data. A commercial success of WOW lies in the methodology of narrative that expands through quests. Narrative of game with single quest in the beginning becomes sequence by serial quests. And the aggregates of sequences change to the missions and combination of missions builds up the world after all. This is the unique narrative structure of WOW. I found the phenomenon of emotion-stimulation through 12 serial quests in a row. I also saw a deep theme which has the sorrow of war and love of family revealed by its narrative. The research on the types of quests was done through the varied quests in WOW. In this research, I categorized the types of quests according to the contents, degree of difficulty, system and quest-solving types. Lastly, I presented the list of quests in the aspect of quest storytelling. Though this kind of listing works are being done in field lately, the quest list presented in this research is a rare trial. Today, Korea dreams of the 2nd revolution of on-line game industry. The field of game industry requires the systematic methodology of game storytelling. I wish the methodologies of quest storytelling presented in this research could be useful guidlines in the field of game production. Key words: quest-storytelling, the phenomenon of emotion-stimulation, the quest list, the types of quests