The numenera corebook is the main rulebook itrsquos a 416 page hardcover with color art some of which wersquove previewed for you this book gives you all the rules of the game as well as the ninth world setting gm advice and even some adventures to get you started wersquore taking the lessons that i learned creating ptolus and applying them here so if you liked the way that book was presented and organized yoursquore going to like this book