A helpful officer directs an army of men-at-arms against a single Type III demon, aka glabrezu (Eric Hotz, Greyhawk Adventures AD&D supplement WGR4: The Marklands by Carl Sargent, TSR, 1993)

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A helpful officer directs an army of men-at-arms against a single Type III demon, aka glabrezu (Eric Hotz, Greyhawk Adventures AD&D supplement WGR4: The Marklands by Carl Sargent, TSR, 1993)
Eric Hotz
Kiraz: The Lost City (1989) picks up where Staff of Fanon leaves off, sort of. During the course of the previous adventure, the players should have some sense that there was a villain who wasn’t dealt with and that the key to doing so might involve two artifacts they found (some body parts of a demon in a locked box, in fact). Kiraz gives them the opportunity to find the third demon bit.
This one is a fairly non-traditional structure, in that the bulk of the material details, sourcebook-like, Kiraz as a general adventuring site. It’s a dwarven city abandoned after a horrible war depopulated it and thus is sort of a riff on Moria (no balrog here though). There is a lot of opportunity to have history come to life in the ruins and no shortage of halls to explore. The inclusion of the necessary artifact for the larger story seems almost an afterthought. I kind of like that though, as the sequence is meant to be slotted in among other adventures, not played through with dedication like a Temple of Elemental Evil sort of thing. The real story of the trilogy takes of in the final volume.
I have to say, this cover by Eric Hotz is one of my absolute favorite pieces of 80s RPG and definitely my favorite piece to come out of Harn. I was delighted when I finally got my hands on it and discovered that inside are page after page of gorgeous maps and cross-sections. Some of the best maps I’ve encountered, I think. And some additionally lovely art. That makes this a super attractive candidate for some non-Harn adventuring, I think.
Iuz the Old, Lord of Pain, rules his evil empire from his throne of bone in Dorakaa, City of Skulls (Eric Hotz, Greyhawk Adventures AD&D 2e supplement WGR5: Iuz the Evil by Carl Sargent, TSR, 1993)
Knights of Nyrond do battle in the wake of the Greyhawk Wars. Dissenting nobles rebel openly against the ancient authority of King Archbold, while forces of evil lay their own plots in secret. (Eric Hotz, AD&D Greyhawk Adventures supplement WGR4: The Marklands by Carl Sargent, TSR, 1993)
"This painting is a replica of a classic tapestry hanging in the main hall of Baron Vorloi's home. This scene of elf warriors battling a green dragon sums up much of what early settlers thought of the lands of Karameikos: a forested home of many monsters." (Eric Hotz, Mystara Campaign boxed set Karameikos, Kingdom of Adventure, TSR, 1994) Hotz's art style here references early medieval culture, similar to his work for the Harn series by Columbia Games.
Mystara was the AD&D 2e version of the Known World campaign setting originally created by Moldvay and Schick at Kent State. The Known World became an official D&D setting in the 1981 B/X Expert rules and in module X1: Isle of Dread, then was expanded upon in the 1987 Gazetteers.
The Traladaran warrior-king Halav, clad in glowing armor, is locked in a battle to the death with the King of the Beast-Men while beleaguered warriors look on. (Eric Hotz, Mystara Campaign boxed set Karameikos, Kingdom of Adventure, TSR, 1994) This set updated the Known World for AD&D 2e; this campaign setting was published first in the Expert D&D rules, then greatly expanded in the Gazetteers in 1987. Much of the art in this 1994 set has a medieval-inspired style including the borders and illuminations.
“The mysterious pit of Ilvir is reputed to be the home of Harn’s most bizarre inhabitant, the deity Ilvir.” Eric Hotz’s art for Hârnmaster added to the setting’s consistent historical feel, borrowing from Norman, Saxon, and Viking material culture (Araka-Kalai, Columbia Games, 1987)