You can manage your installation and game versions through the GOG Galaxy launcher or the GOG website:
The GOG.com version is highly regarded for its nature and specific technical additions: download-heretic-hexen-collection-gog-classic-i-know
: Adds two brand-new episodes and support for community-published mods. You can manage your installation and game versions
The on GOG is a definitive restoration that bundles the foundational dark fantasy first-person shooters (FPS) with modern enhancements. Released as a combined package in August 2025 , this collection includes the original DOS classics and an enhanced version optimized for modern systems. Games Included in the Collection select the game
: In the GOG Galaxy launcher, select the game, click the customization button (cog icon), and look under "Additional executables" or "Manage installation" to find the original DOS versions.