
Diablo is an action role-playing hack and slash video game developed by Blizzard North and released by Blizzard Entertainment in January 1997.

Diablo II is an action role-playing hack-and-slash computer video game developed by Blizzard North and published by Blizzard Entertainment in 2000 for Microsoft Windows, Classic Mac OS, and macOS. The game, with its dark fantasy and horror themes, was conceptualized and designed by David Brevik and Erich Schaefer, who, with Max Schaefer, acted as project leads on the game. The producers were Matthew Householder and Bill Roper.

Diablo III is a hack-and-slash action role-playing 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, the PlayStation 3 and Xbox 360 in September 2013, the PlayStation 4 and Xbox One in August 2014, and the Nintendo Switch in November 2018. Players choose to play as one of seven character classes – Barbarian, Crusader, Demon Hunter, Monk, Necromancer, Witch Doctor, or Wizard – and are tasked with defeating the Lord of Terror, Diablo, as in previous games in the series.

Diablo III: Reaper of Souls is the first expansion pack for the action role-playing video game Diablo III. It was revealed at Gamescom 2013. It was released for the PC and Mac versions of Diablo III on March 25, 2014. The expansion pack content was released as part of the Diablo III: Ultimate Evil Edition version for consoles on August 19 for the PlayStation 4, Xbox One, PlayStation 3, and Xbox 360. That edition expanded the base Diablo III game on the PlayStation 3 and Xbox 360, and brought the game for the first time to the PlayStation 4 and Xbox One.

Diablo III: Rise of the Necromancer is a downloadable content pack for the action role-playing video game Diablo III. It was announced at BlizzCon 2016. It was digitally released for the PC, Mac, and latest-generation console versions of Diablo III on June 27, 2017. It is included in the retail and digital release Diablo III: Eternal Collection for consoles. The pack adds the Necromancer class to Diablo III.

Diablo Immortal is an upcoming free-to-play action role-playing video game in the Diablo series, designed for online multiplayer on mobile devices. The game's plot takes place between the events of Diablo II and Diablo III. Developed by Blizzard Entertainment and NetEase, it was announced in late 2018 and is planned for release on Android and iOS with no set release date.

Diablo IV is an upcoming dungeon crawler action role-playing game developed by Blizzard Entertainment, the fourth title in the Diablo series. The game was announced at BlizzCon 2019 on November 1, 2019 for PC, PlayStation 4, and Xbox One. A release date has not been announced by Blizzard Entertainment; however, some estimates predict the release some time during 2021. Series features such as re-playable, procedurally generated dungeons, and loot-focused character-building are returning, while new features such as an open world, and player versus player (PVP) interactions are incorporated. Three playable classes were revealed in the game's announcement – Barbarian, Sorceress, and Druid – all of which have appeared in the series. Players guide their character through quests and combat in the world of Sanctuary as the once banished Lilith returns to wreak havoc.

Diablo: Hellfire is the expansion pack for the video game Diablo, developed by Synergistic Software, a Sierra division, and published by Sierra On-Line in 1997. Despite the objections of Blizzard Entertainment, the Hellfire expansion was produced, permitted by Davidson & Associates, their parent company at the time. Blizzard North, who was developing the sequel Diablo II, thus imposed numerous restrictions upon Synergistic Software's development of Hellfire.

Diablo II: Lord of Destruction is an expansion pack for the hack and slash action role-playing game Diablo II. Unlike the original Diablo's expansion pack, Diablo: Hellfire, it is a first-party expansion developed by Blizzard North.