Old School Solo

From the back of the book: This solo roleplaying supplement is written specifically to feel like natural OSR RPG rules. If you are comfortable with rolling to see if you encounter a wandering monster and then rolling to see what it is, then you can work these rules! Most of the rules in this add-on rulebook condense down into just four tables, the rest of the content is all supporting content to help you get the most out of solo roleplaying.