The different games from the series are "", "" (with an expansion pack) and "Warcraft 3" and its expansion pack, "The Frozen Throne". The most successful game of the series is "The Frozen Throne" expansion pack, which sold more than 12 million copies. The MMORPG "World of Warcraft" is based on these games. Blizzard Entertainment also created "World of Warcraft", which was published by Vivendi Games.