Baal Lord of Destruction | Diablo Lore

Diablo is an action role-playing dungeon crawler video game series developed by Blizzard North and continued by Blizzard Entertainment after the North studio shut down in 2005. The series is made up of four core games: Diablo, Diablo II, Diablo III, and Diablo IV. Expansions include the third-party published Hellfire, which follows the first game; Lord of Destruction, published by Blizzard and released after the second game; Reaper of Souls, which follows the third game; and the upcoming Vessel of Hatred, which will follow the fourth game. Additional content is provided through story elements explored in other types of media forms.

The franchise is set in the dark fantasy world of Sanctuary, and its characters are primarily humans, angels, and various classes of demons and monsters. The first three games in the series take place in similar geographic areas, with several common areas including the town of Tristram and the region around Mount Arreat. Other notable settings include the High Heavens and the Burning Hells, two separate realms with ties to Sanctuary. The series primarily focuses on the ongoing conflict between the humans living in Sanctuary and the demon hordes who are led by Diablo, the series' overarching antagonist. The humans are occasionally aided by angels, notably the Archangel Tyrael.

The video game series' popularity and success has resulted in the publishing of several books relevant to the Diablo setting, covering a wide range of timelines of the universe.[2] There are also comics that explore various stories within the world of Sanctuary.

As of April 8, 2020, the series has sold nearly 100 million copies worldwide