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The different games from the series are Warcraft: Orcs and Humans, Warcraft 2: Battle.net edition (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.[source?] The MMORPG World of Warcraft is based on these games. Blizzard Entertainment also created World of Warcraft, which was published by Vivendi Games.