: Originally released in 1994, it used a modified DOOM engine to introduce inventory systems and vertical aiming to the genre.
You can manage your installation and game versions through the GOG Galaxy launcher or the GOG website: download-heretic-hexen-collection-gog-classic-i-know
: 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. : Originally released in 1994, it used a