Blizzard Entertainment made the Diablo video game series.
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 . Diablo is an action role-playing hack and slash dungeon crawler video game series developed by Blizzard Entertainment ( and Blizzard North ) .