Island of Ignorance is a historical backdrop and setting designed for one-off or campaign play with Cthulhu Hack. The illustrated volume includes alternate character options, new Connections, investigation seeds, and a complete but flexible introductory adventure—with an investigation into the events at Deptford Head in "Long Ships and Short Fuses", a tale with multiple possible outcomes to suit your campaign ideas.

The book offers an Introduction to the campaign concept, and considers why you might play games here; then summarizes Colony Life with a brief overview of key features, places and personalities. Age of the Mythos sets out the various entities that have existed here over countless millennia, while Creatures sets out those that remain to this day, including the fearsome Bhole. Additional short sections cover Characters—including emancipated convicts, civil servants, and free settlers—and advice on Running the Game, including Adventure Seeds.

Written by Paul Baldowski. Illustrated by Paul Tomes, Andrés Sáez Martínez, Pär Lindström, and Paul Baldowski.

Sanction is a set of “Universal Rules for Challenge-driven Games.” A collection of coherent game mechanics for one-off or serialised multi-genre roleplaying. Sanction is stripped down, flexible, and intended to be hacked to suit your needs. It's not about covering every outcome from the outset but providing you with the mechanics, tools, and guidance to introduce rules when needed.

The Core Rules contain two Genre Setups as hacked examples of the system. The Agency – offers a backdrop of failed and flawed intelligence agent drop-outs consigned to urban backwaters but unable to truly escape the errors of their past lives. And, With Guile, Incantation and Faith – a fantasy world where divine warriors cut a bloody swathe through dungeons, leaving you—intrepid lesser heroes—to clean up the stragglers, puzzles, traps and treasures without stealing the spotlight.

Written by Paul Baldowski and Richard August. Illustrated by MARCINs, Jorge Muñoz, J E Shields, Paul Tomes, and Evlyn Moreau.