Blizzard Entertainment, Inc. is an American video game developer and publisher founded on February 8, 1991 under the name Silicon & Synapse by three graduates of UCLA, Michael Morhaime,Allen Adham and Frank Pearce and is currently a subsidiary of American company Activision Blizzard. Based in Irvine,California, the company originally concentrated primarily on the creation of gameports for other studios before beginning development of their own software in 1993 with the development of games like Rock'n Roll Racing and The Lost Vikings. In 1994 the company became Blizzard Entertainment Inc before being acquired by distributor  and Davidson & Associates later by Vivendi. Shortly thereafter, Blizzard shipped their breakthrough hit Warcraft:Orcs vs Humans. Blizzard went on to create several successful video games, including the Warcraft sequels, StarCraft, and Diablo series, and the MMORPG World of Warcraft. Their most recent projects include World of Warcraft's fourth expansion,Mists of Pandaria, the first expansion of StarCraft ll, Heart of the Swam, and the recently released Diablo lll.

On July 9, 2008, Activision officially merged with Vivendi Games, culminating in the inclusion of the Blizzard brand name in the title of the resulting holding company, though Blizzard Entertainment remains a separate entity with independent management.Blizzard Entertainment offers events to meet players and to announce games: the BlizzCon in California, United States, and the Blizzard Worldwide Invitation in other countries, such as Paris, France and Seoul, South Korea.