The Monsters Know What They're Doing

The Monsters Know What They're Doing is a book series by Keith Ammann, published by Saga Press since 2019, consisting of unofficial supplements for fifth-edition Dungeons & Dragons.

The content of the initial book is based on Keith Ammann's blog of the same name, started in 2016.

It was extended into a series with similar topics, with The Monsters Know What They're Doing: Combat Tactics for Dungeon Masters (2019) followed by Live to Tell the Tale: Combat Tactics for Player Characters (2020), MOAR!

[1][2] SyFy author James Grebey called the seminal blog "a valuable resource for DMs who want to give their players a challenge and make their game feel truly immersive" and praised it for helping Dungeon Masters to "run monsters as the intelligent and exciting foes they're meant to be rather than just generic cannon fodder".

[3] John ONeill reviewed The Monsters Know What They're Doing: Combat Tactics for Dungeon Masters for Black Gate, and stated that "To be honest, I don't know how much I'd actually use The Monsters Know What They're Doing, but it sure made fun reading.