This data appeared on LinkedIn from Lauren Ashling Hill, Head of Communications at Activision Blizzard. In her profile, she calls the game an absolute record-breaker for the studio, suggesting that the project surpassed the performance of Diablo III (over 20 million copies).
The success is supported by regular updates and patches. After the release of the Vessel of Hatred expansion, fans are awaiting a new major expansion, Lord of Hatred, which will be released in April 2026. It will add a new character class and regions, as well as strengthen Diablo IV's position as a leader in the hack’n’slash genre.
The record was achieved despite internal difficulties: after Blizzard's acquisition by Microsoft in 2023, the team experienced a wave of layoffs and the process of unionization.