The original edition of Heretic was only available through shareware registration (i.e. mail order) and contains three episodes. A retail edition, distributed by GT Interactive, was titled Heretic: Shadow of the Serpent Riders and features two additional episodes: The Ossuary, which takes the player to the shattered remains of a world conquered by the Serpent Riders many centuries ago, and The Stagnant Demesne, where the player enters D'Sparil's birthplace. A free content patch was downloadable from Raven's website to update the original Heretic to match Shadow of the Serpent Riders.
No posted cheats for this game yet.