In 2007, Blizzard moved their headquarters to 16215 Alton Parkway in Irvine, California.
On November 23, 2004, Blizzard released World of Warcraft, a massively multiplayer online role-playing game.
Blizzard was part of the Vivendi Games group of Vivendi.
In July 2008 Vivendi Games merged with Activision, using Blizzard's name in the resulting company, Activision Blizzard.
Currently, Blizzard has three main franchises: Warcraft, Diablo and Star Craft.