Hellfire (or Diablo: Hellfire) is an RPG game released in 1997 by Sierra On-Line. The game was released for PC (Windows).
Hellfire is not an independent game - it's an addition to the Diablo game (which you must have to play). In addition, we find two new dungeons, Demon Crypt and Festering Chest. In each of them we will meet completely new demons and ghostly creatures. The nest is controlled by the boss Defiler while the crypt is demon Na-Krul (former lieutenant Diablo, who turned away from his master). Also, in addition, you'll find a new character class: A monk who can attack several enemies at once.
Install the add-on. Then - install the patch that you will find in the archives. To start the game, you must have a Diablo game disc.