World of Warcraft is a massively multiplayer online role-playing game released in 2004 by Blizzard Entertainment. It is the fourth released game set in the Warcraft fantasy universe. World of Warcraft takes place within the Warcraft world of Azeroth, approximately four years after the events at the conclusion of Blizzard’s previous Warcraft release, Warcraft III: The Frozen Throne. The game was announced in 2001, and was released for the 10th anniversary of the Warcraft franchise on November 23, 2004.