The Book of Beasts is a bestiary you can play. It presents at least twenty-five new monsters in great detail, with further bonus monsters unlocked as stretch goals (see below). Each beast comes ready to play with tailored random encounters, presenting the Gamemaster with a handy set of mini-adventures to go.

The book also includes legends about each monster, introduces the option to harvest resources from slain beasts, and lets the player characters use their Lore skills to gain insight into a monster´s strengths and weaknesses. This will help them defeat – or at least survive an encounter with – the book´s monstrosities.