Diablo: Hellfire (1997)

Stoked by the forges of Hellfire burns the first and only authorized expansion of the Diablo universe. This fiery new tale finds you face-to-face with the evil of Na-Krul. Once the servant of Diablo, now this hideous demon plans to depose his master as the lord of all evil. In this all-new single player missing, you alone must descend into new levels of danger. Exploring never-before-seen depths of savage brutality. Gain new weapons, powers and strengths in the attempt to defeat the demon Na-Krul. Then, if you live, battle an even stronger Diablo than ever before

• Release Date: November 24, 1997
• Developer: Synergistic Software, Inc.