With roughly 9 million players around the globe, World of Warcraft or WoW has the most extensive story of any video game. The history of the WoW universe has six chapters in the game bible and a timeline, beginning at the shaping of the universe. There are pages of lore, a story on the ongoing Crusade, and even an encyclopedia.
This is one of the most epic fantasy stories ever told, and it just happens to be in the form of a role-playing online game.
The genius of this game is the insurmountable bulk of work that went into creating the world, the rules, the characters, and the ongoing opposition. From there, the creators of WoW can allow players to roam the world on their own - each paying about $15 each month to subscribe.