Diablo III is a 2012 online-only action role-playing dungeon crawling game developed and published by Blizzard Entertainment as the third installment in the Diablo franchise. It was released for Microsoft Windows and OS X in May 2012, PlayStation 3 and Xbox 360 in September 2013, PlayStation 4 and Xbox One in August 2014, and Nintendo Switch in November 2018. Set 20 years after the events of Diablo II, players control one of seven character classes – Barbarian, Crusader, Demon Hunter, Monk, Necromancer, Witch Doctor, or Wizard – and are tasked with defeating Diablo.
An expansion pack, Reaper of Souls, was released for PC in March 2014. It was released for consoles as part of the Diablo III: Ultimate Evil Edition version in August 2014. The Rise of the Necromancer pack was released for Windows, macOS, PlayStation 4 and Xbox One in June 2017. Diablo III: Eternal Collection, combining Reaper of Souls and Rise of the Necromancer, was released for PlayStation 4 and Xbox One in June 2017, and for the Nintendo Switch in November 2018.
The game received positive reviews, although its always-on DRM feature was criticized. The game set a new record for "fastest-selling PC game" by selling over 3.5 million copies in the first 24 hours of its release, and became the best-selling PC game of 2012 by selling over 12 million copies. As of August 2015, the number of sales had grown to over 30 million. A sequel, Diablo IV, was announced in 2019 and was released on June 5, 2023.