Demesne
B69/100Web serial by Shadow Crystal Mage
Out on the frontier of a new continent, the wizard Lori and her group of settlers try to build a community in a land actively hostile to intelligent life. With their wits, their will, and their newly built Dungeon to protect them against the Iridescence — the deadly growth that makes life inhospitable beyond the borders of their demesne — they should be fine. If they can survive the lack of infrastructure. And the deadly beasts they need to hunt for food. And idiots who don't understand what settling somewhere actually entails. And dragons. Using structural engineering, the scientific method, logistics, and the dark art of personnel management, Lori and her newly dubbed lord Rian must solve the persistent problems of shelter, sanitation, food storage, and keeping the colonists from making terrible decisions.