World of Warcraft, one of the world's most popular MMORPG games is released by Blizzard Entertainment. The game takes place within the fantasy world of Azeroth where players can create their own characters, such as elves, humans, dwarfs or undead creatures. Since its lauch it has had 8 major expansion packs. It has been one of the most successful online games having more than 10 million players worldwide until 2009.