Mark J.P. Wolf's study of imaginary worlds theorizes world-building within and across media, including literature, comics, film, radio, television, board games, video games, the Internet, and more. Building Imaginary Worlds departs from prior approaches to imaginary worlds that focused mainly on narrative, medium, or genre, and instead considers imaginary worlds as dynamic entities in and of themselves. Wolf argues that imaginary worlds—which are often transnarrative, transmedial, and transauthorial in nature—are compelling objects of inquiry for Media Studies. Chapters touch on:

Building Imaginary Worlds also provides the scholar of imaginary worlds with a glossary of terms and a detailed timeline that spans three millennia and more than 1,400 imaginary worlds, listing their names, creators, and the works in which they first appeared.