As it was informed by "Market Leader (US)"
Tips For Investors: Blizzard Conquers Video Game Industry
There is probably no country in the world that doesn’t have video game stores selling games produced by Blizzard. Such games series as Diablo, WarCraft and StarCraft have been the bestsellers around the world. They made Blizzard one of the most popular video game developers in the world.
Blizzard Entertainment: Success History