Diablo: Hellfire is a semi-unofficial expansion for the original action-RPG, developed by Synergistic Software at the behest of publisher Sierra On-Line rather than Blizzard itself. The expansion ...

Diablo, which was recently released digitally for the first time on GOG, has now been joined by its non-canonical expansion, Hellfire. I confess I'd forgotten all about it, but enough people ...

Those looking to jump into Hellfire can purchase the first Diablo from GOG.com. It's currently on sale as part of the site's Summer Sale Festival, which is set to last until June 17.

Hellfire shipped to stores in November 1997, ten months after Diablo ’s release and several months past Synergistic’s initial due date. Industrious players quickly uncovered its trove of secrets.