Grants the ability to fly, which is essential for reaching certain secret areas or navigating levels like "D'Sparil's Keep".
The most "useful piece" for this specific GOG release is to use a modern source port like . It updates the game to support high resolutions, widescreen, and modern control schemes (like vertical mouselook). How to set it up: Install the game from your GOG library . Heretic.Shadow.of.the.Serpent.Riders-GOG.rar
Getting running smoothly on modern systems often requires a bit more than just the base GOG installer, as the original DOS engine can feel clunky today. 1. Essential Quality-of-Life: Use GZDoom Grants the ability to fly, which is essential