More than just another Doom clone, Heretic lets you battle it out as Corvus against the first of the serpent riders. New weapons, the ability to jump and fly, water that moves your char around etc. make this game stand apart from others of it's kind. Along with an inventory system, and the Tomb of Power, which gives all your weapons an added boost, perfect for when you're opponents are just a little better equiped than you.

Heretics game-engine is the same as in "Doom" and "Doom 2". Gameplay is very similar with some extra-features and a fantasy-setting. In 1996 GT Interactive re-released the game as "Heretic: Shadow of the Serpent Riders", which features 2 more episodes.