The boundless complexity of worldbuilding can create a daunting challenge for writers of science fiction and fantasy. In the third volume of the New Worlds series, award-winning fantasy author and former anthropologist Marie Brennan provides not only the building blocks for creating a setting, but advice on exposition and other aspects of craft. Whether you need guidance on security or sanitation, demographics or demons or drugs, you're sure to find inspiration here. This volume collects essays from the third year of the New Worlds Patreon.