World of Warcraft and the ohter Warcrafts are a whole different thing... Think of it as teh difference between Starcraft and Starcraft: Ghost, but even bigger. WoW is a MMORPG, Massive Multiplayer Online Role Playig Game. For a fee that you pay each month you can play with hundreds and thousands of ohter people at the same time in the Warcraft universe. You can choose your race, class, professions etc. etc.
www.worldofwarcraft.com
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