Another official source for the classic title.
To get the full experience, you need the HERETIC.WAD file from the registered version of the game. Where to Get the Full Heretic WAD The full game, specifically the Shadow of the Serpent Rider download heretic wad full
: Sound effects and the iconic dark fantasy MIDI soundtrack. Another official source for the classic title
Most players use a "Source Port" to play the game on modern systems with high resolutions and better controls: download heretic wad full