The Diablo Series is a popular action role-playing game franchise developed by Blizzard Entertainment. The series began with the release of the original Diablo in 1996, which introduced players to the dark fantasy world of Sanctuary. Players take on the role of heroes battling against the forces of evil, including iconic villains like Diablo, the Lord of Terror. Subsequent installments, including Diablo II and Diablo III, expanded the lore and gameplay mechanics, introducing new character classes and multiplayer features. The series is known for its addictive gameplay, deep itemization, and cooperative play, making it a staple in the gaming community. A fourth installment, Diablo IV, was announced to continue the franchise's legacy.