From publisher blurb: The B/X Essentials line is a restatement of the classic Basic/Expert fantasy adventure gaming rule set, given a fresh, new presentation focused on usability: Basic and Expert rules seamlessly combined. Streamlined presentation optimised for ease of reference during play. Meticulously researched; a guaranteed 100% accurate rendition of the classic rules of yesteryear. Carefully clarified, ironing out ambiguities in the original rules. This fourth book presents all of the classic Basic/Expert monsters in a new, easy-to-reference format, optimised for use at the table.