Diablo II: Lord of Destruction is an expansion pack for the hack and slash action role-playing game Diablo II. Unlike the original Diablo's expansion pack, Diablo: Hellfire, it is a first-party expansion developed by Blizzard North. Lord of Destruction added content in the form of two new character classes, new weapons and an addition of a fifth act, and also dramatically revamped the gameplay of the existing Diablo II for solo and especially multiplayer.