Diablo is a popular action role-playing game series developed by Blizzard Entertainment. Set in the dark fantasy world of Sanctuary, players battle against the forces of evil, including the titular character, Diablo, the Lord of Terror. The series is known for its addictive gameplay, deep lore, and cooperative multiplayer features. The franchise began with the original Diablo released in 1996, followed by several sequels and expansions that expanded the story and gameplay mechanics. Players can choose from various character classes, each with unique abilities, to explore dungeons, defeat monsters, and collect loot in their quest to save the world from demonic threats.