The Art of Professor Layton vs. Gyakuten Saiban.png|Front cover AoPLvsGS - front & back.png|Front and back covers The Art of Professor Layton vs. Gyakuten Saiban is a 176-page Japanese language paperback artbook. It has not been released outside of Japan. The book is a collection of image galleries, character profiles, concept designs, sketch works, and backgrounds from Professor Layton vs. Phoenix Wright: Ace Attorney.