Novels in the series
- The Coming of the Horseclans (1975)
- Swords of the Horseclans (1976)
- Revenge of the Horseclans (1977)
- A Cat of Silvery Hue (1979)
- The Savage Mountains (1979)
- The Patrimony (1980)
- Horseclans Odyssey (1981)
- The Death of a Legend (1981)
- The Witch Goddess (1982)
- Bili the Axe (1982)
- Champion of the Last Battle (1983)
- A Woman of the Horseclans (1983)
- Horses of the North (1985)
- A Man Called Milo Morai (1986)
- The Memories of Milo Morai (1986)
- Trumpets of War (1987)
- Madman's Army (1987)
- The Clan of the Cats (1988)
The books contain examples of:
- After the End: When the stories mostly take place (with a few flashbacks to 20th-century America here and there).
- Amazon Brigade: The Moon Maidens
- All Amazons Want Hercules: After losing their valley home, they tend to pick the manly men
- Alliterative Name: Milo Morai
- A Threesome Is Hot: Several characters have more than one wife at a time. Not so much the other way.
- Author Appeal: Addams liked Armenians enough to write them into the book.
- Bigfoot, Sasquatch, and Yeti: The Kleesahk
- Blessed with Suck: While being Undying has lots of good things about it—-immortality, for one—-it does have drawbacks. Like sterility. And being very prone to amnesia after a few centuries; brain damage will heal, but memories might not.
- Blind Seer: Blind Hari Krooger.
- Brother–Sister Incest: One of the pairs of Undying.
- The Chosen One: Milo Morai not only wrote the prophecies, he made sure to choose himself to fill it.
- Combat by Champion: Featured in the first book between Lord Alexandros Pahpahs and Lord Demetrios.
- Cool Horse: They are called the Horseclans.
- Corrupt Church: Several of these—-Adams did not like churches, it seems.
- Depraved Bisexual: Quite a few of the Ehleen nobles.
- Depraved Homosexual: The rest of the Ehleen nobles. Nearly every single Ehleen noble has a passion for gay rape.
- Eternal English: Averted, though mostly shown in names.
- The Fog of Ages: After a few centuries, the Undying in many cases forget their past.
- Gentlemen Rankers: In A Man Called Milo Morai, Sergeant Jethro Stiles identifies himself and Milo as these. Stiles considers himself to be doing penance for an unspecified moral failing which happened in his past.
- Ghostapo: Hitler was one of the Undying, with incredible psychic powers.
- Grand Theft Me: The Witchmen do this quite a bit—-with mechanical assistance at first, but later on, at will.
- Hidden Elf Village: Milo Morai spends a couple of centuries looking for one of these.
- Horn Attack: The Shaggy-Bull is the product of an attempt to recreate Bison primogenus, the prehistoric longhorn bison. It has long, sharp horns that can inflict lethal damage on its opponents.
- Humans Are Psychic in the Future: Also the cats, horses, and whales.
- Knight in Shining Armor: Geros Lahvoheetos is polite, humble to a fault, unfailingly chivalrous and courageous. Has trouble grasping that wetting himself in terror would only be cowardice if it stopped him from behaving bravely, which it never does.
- Magical Negro: The Zartogahn characters are almost always doctors.
- Manly Tears: The fierce warriors of the Horseclans freely express their emotions among those of their own kind.
- Martyrdom Culture: The Sword Cult.
- New-Age Retro Hippie: The Ganiks.
- No One Could Survive That!: How many of the Undying are revealed.
- Omniglot: Several of the older Undying, especially Milo Morai.
- Panthera Awesome: The Prairie Cats, especially when garbed for war.
- Political Overcorrectness: ...could basically be renamed "Ohrgahnikahnsehrvaishuhn"(Organic Conservation), the religion of the "Ganiks", descendants of hippie communes.“Take all of the detested and heinous abominations of conduct despised and almost universally prohibited by races or communities of civilized man, and you had the mundane, everyday practices of your average, run-of-the-mill Ganik...” (Bili The Axe)
- "Kahlodjee"(Ecology) forbids taking anything out of the ground except for use as food. So they don't mine or forge metal. However, they'll gladly claim metal tools and weapons forged by someone else - after slaughtering them for doing it.
- "Kahnzuhvaishuhn"(Conservation) forbids wasting anything, so they wear clothing until it rots.
- "Ndaindjuhd"(Endangered) forbids consuming the flesh of any animal. Veggies only... with non-animal meat on the side. Specifically, humans, even their own dead. Conquered enemies are at the top of the menu.
- "Pozahjizm"(Pacifisim) is only practiced by Ganik slave-farmers. To engage in combat, even in self-defense, is punished by on-the-spot execution.
- "N’Vymhndt"(Environment) and "Plooshuhn"(Pollution) forbids poisoning the air, land, or waters. So they don't burn anything, and they never bathe.
- Rape as Drama: Lots and lots of it, of both genders; but it's only presented as wrong when the bad guys do it.
- Really 700 Years Old: All of the Undying eventually, but in particular Milo Morai and Clarence Bookman.
- Self-Fulfilling Prophecy: Milo Morai wrote his own prophecies.
- The Women Are Safe with Us: Averted, captured women are given as slaves. Not Children though.
- Warrior Prince: Bili Morghun, aka Bili the Axe. Born heir to a duchy but rises to archduke and later prince of his part of the Confederation. A pleasant gentleman to those he finds honourable... but also a very deadly warrior and prone to sometimes brutal judgement, such as massacring rebels by the hundreds to ensure that the consequences of rebellion will be utterly apparent for the future.
