Publisher's blurb: Lost in the marshes of the Isle of Thorn, The Treasure Tree will give inestimable treasures to the adventurers who will dare to come to it. But the journey will not be easy: terrifying rumors are being heard on this island! Will you be able to unlock the secret of the Isle of Thorns and reach The Treasure Tree? The book is designed for solo rpg and can be played directly during its reading. It is up to you to imagine the resolution of each sequence: Determine the secret motivations of each character Choose the adventurer who will shine in each battle Determine their fate on a single dice roll! The book is based on the SOLO RPG rule system: "The simplest Ruleset of the World" and includes a tutorial to help you in the staging: Ultra-light and ultra-lethal rules Find inspiration easily with visual aids Tips for quick character creation