The multiplayer online RPG called World of Warcraft was made by Blizzard Entertainment.
Blizzard Entertainment . Blizzard went on to create several other video games , including Warcraft sequels , the Diablo series , the StarCraft series , and in 2004 the massively multiplayer online role-playing game World of Warcraft . Warcraft . The series is made up of five core games : Warcraft : Orcs & Humans , Warcraft II : Tides of Darkness , Warcraft III : Reign of Chaos , World of Warcraft , and Hearthstone .