Blizzard Entertainment
On November 23, 2004, Blizzard released "World of Warcraft", a massively multiplayer online role-playing game. "World of Warcraft" is the fourth released game set in the fantasy "Warcraft" universe, which was first introduced by "" in 1994. Blizzard announced "World of Warcraft" on September 2, 2001. The game was released on November 23, 2004, on the 10th anniversary of the "Warcraft" franchise.
World of Warcraft: Wrath of the Lich King
On September 19, 2012, the "Wrath of the Lich King" expansion was completely merged with the original "World of Warcraft" game, just as the "Burning Crusade" expansion was the previous year. Now all players who purchase the original game automatically receive "The Burning Crusade" and "Wrath of the Lich King" at no additional cost. This merging of the expansions with the original game is called a "Battle Chest".