The Bacterionomicon is a compendium of infectious bacteria and antibiotics presented in the style of an RPG bestiary book, in order to use imagination, metaphor, and stories to aid learning and promote awareness about antibiotic misuse. The book contains entries for 46 "Lords of Pestilence" from Acinetobacter baumannii to Yersinia pestis, and 30 "Apothecary Warriors" from Amoxicillin/Clavulanate to Vancomycin. Each entry includes an elaborate high fantasy illustration, descriptions of tribal groupings, fighting styles, and nemeses, and an article about its role in the ongoing battles across the Soman countryside.