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 mortal realm, 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 randomly
generated 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. To celebrate Diablo's 20th anniversary, the original game was recreated in Diablo III in early 2017.