What is an RPG? There’s a question that could send you down a rabbit-hole. At least one person per possible answer is already out there, ready to spew hate at you from Twitter. What’s an RPG book? That one, in theory, should be a little easier. An RPG book, whether we mean a physical book or a PDF, is the document that enables you to play an RPG. These can be core rulebooks, they can be setting books, or they can be supplements for either the setting or the rules, but they are, broadly speaking, the documents in which an RPG is contained. So what does that look like? You may be imagining text, some tables and charts, and probably some pictures. As much as these books vary, you probably think you know what the next RPG manual you crack open is going to look like. That’s why you need to crack open Mörk Borg.