Herian 2 (HERIAN2.WAD)

Ian Wilson published Herian in 1998; about a year or so later in 1999, we saw the release of Herian2, its sequel, and to date the last entry in the series. Like the original, H2 is a thirty-two map replacement for Doom II that features a number of sprite replacements for Doom II enemies culled from Heretic. There are some differences, though. Herian2 actually features a story, first of all. It makes more sense if you use Wilson's TC package (this download bundled by the late, great Jive), which replaces all inappropriate enemies and the weapons with stuff from Heretic and Hexen. Essentially, it takes place pre-pre-pre-Doom, and post-Herian. It turns out Herian was the player character's war against infernal powers, back when the forces of Hell and the Serpent Riders were united. He thought he had won, but when he prepares to settle down, there's another assault that he must fight off.

Herian (HERIAN.WAD)

Ian Wilson has but two entries in his Doom legacy, but both are full Doom II megaWADs. Herian is the first, to be played in limit-removing ports (followed by Herian2 for a very early release of ZDoom). At the very least, Wilson recommends against using it in vanilla Doom due to visplane errors (though only one instance is specifically mentioned). Herian has no given story; Wilson just rattles of a list of influences, including the entire Doom family of games - Doom, Doom II, Heretic, Hexen, Strife - in addition to Apogee's Rise of the Triad and Duke Nukem 3D. It draws its main aesthetic from Heretic and Hexen as it uses a number of their resources and pulls a few monster replacements (in sprites, not mechanics).