Making Enemies: Monster Design Inspiration for Tabletop Roleplaying Games (The Monsters Know What They’re Doing)

2026 Gold ENNIE Award Winner for Best Writing

From the acclaimed author of the “must-have” (R.A. Salvatore, #1 New York Times bestselling author) The Monsters Know What They’re Doing series, an indispensable and easy-to-follow handbook for creating original enemies in tabletop role-playing games.

In The Monsters Know What They’re Doing, the essential tactics guide for Dungeon Masters, and its sequel, MOAR! Monsters Know What They’re Doing, Keith Ammann reverse-engineered hundreds of fifth edition Dungeons & Dragons monsters to help DMs prepare battle plans for combat encounters before their game sessions.

Now, in Making Enemies, he explores everything that goes into creating monsters from the ground up: size, number, and level of challenge; monster habitats; monster motivations; monsters as metaphors; monsters and magic; the monstrous anatomy possessed by real-world organisms; and how to customize monsters for your own tabletop roleplaying game adventuring party to confront. No longer limited to one game system, Making Enemies shows you how to build out your creations not just for D&D 5E but also for Pathfinder 2E, Shadowdark, the Cypher System, and Call of Cthulhu 7E. Including interviews with some of the most brilliant names in RPG and creature design, Making Enemies gives you the tools to surprise and delight your players—and terrify their characters—again and again.

Keith Ammann is the creator of the award-winning blog and book The Monsters Know What They're Doing and author of a series of books by the same name, including the recent Making Enemies: Monster Design Inspiration for Tabletop Roleplaying Games and How to Defend Your Lair. He's been a roleplaying gamer and game master for more than thirty-five years. He likes to play outwardly abrasive helpers, out-of-their-element helpers, and genuinely nice, helpful helpers. Mostly, though, he plays non-player characters. And monsters.