This book contains everything you need to run an old school style 'Role Playing Game' (RPG) with nothing more than a few dice, some scraps of paper and may be a friend of two. Think of this book as a manual to help the 'Games Master' write and direct fantasy style adventures. Sinking Heart draws on a wide range of influences from across the genre but is an accessible introduction to fantasy role playing. The fourth edition includes a starter dungeon and an appended larger adventure map and monster sheets.