Diablo is an action role-playing hack and slash video game developed by Blizzard North and released by Blizzard Entertainment on December 31, 1996.
Set in the fictional Kingdom of Khanduras, located in the world of Sanctuary, Diablo has the player take control of a lone hero battling to rid the world of Diablo, the Lord of Terror. Beneath the town of Tristram, the player journeys through sixteen dungeon levels, ultimately entering Hell itself in order to face Diablo.
An expansion pack, entitled Diablo: Hellfire, was released in 1997 by Sierra Entertainment. In 1998 Blizzard released Diablo for the PlayStation. This version featured direct control of the main character using the PlayStation controller and was developed by Climax Studios. The game’s success led to two sequels, Diablo II in 2000, and Diablo III in 2012.