Diablo IV is a 2023 online-only action role-playing dungeon crawling game developed and published by Blizzard Entertainment. It is the fourth main installment in the Diablo series. Announced at BlizzCon 2019, the game was released on June 5, 2023 for the PlayStation 4 and PlayStation 5, Xbox One and Xbox Series X and S, and Microsoft Windows. Players create a character from one of five playable classes—Barbarian, Druid, Necromancer, Rogue, or Sorcerer—and use their skills to complete quests through combat.

Staple features returned from previous installments in the franchise, such as a focus on replayable, procedurally generated dungeons and loot-focused character-building, while also featuring mechanics new to the series, including an open world and player versus player combat.

Diablo IV received generally positive reviews from critics, who praised the game's narrative and atmosphere. The game generated $666 million in revenue within the first five days after launch.