World of Warcraft
World of Warcraft (WoW) is a massively multiplayer online role-playing game (MMORPG) 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, "." The game was announced in 2001, and was released for the 10th anniversary of the "Warcraft" franchise on November 23, 2004. Since launch, "World of Warcraft" has had seven major expansion packs released for it: "", "", "", "", "", "", and "".
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".