City Builder: A Guide to Designing Communities is a rules-free universal sourcebook specifically designed to help guide storytellers through the process of creating exciting and compelling urban areas and other sorts of communities and places within them for their projects. It is not specific to any particular game system or setting and is intended to be compatible with almost any ancient, Dark Ages, Middle Ages, Renaissance, fantasy, or other role-playing milieu.

• Communities of all sizes, from smaller ones like thorps, hamlets, and villages to larger ones like towns and cities, along with special-purpose settlements like military bases, plantations, and communes.
• Regional and racial influences; characteristics of towns and cities, to include buildings, availability of goods and services, law and order, adventuring on, above, and below city streets, urban lighting, and community defenseworks; and disasters like flood, fire, war, and pestilence.Descriptions of 85 different sorts of places.
• Two or three Adventure Hooks tying in with each described sort of place.