This lists includes works for which installments exist in multiple forms of media, such as books, comic books, films, television series, and video games.
Multimedia franchises usually develop through a character or fictional world becoming popular in one medium, and then expanding to others through licensing agreements, with respect to intellectual property in the franchise's characters and settings.
Although many historical figures (such as Abraham Lincoln, Julius Caesar, and Casanova) and historical events (such as the sinking of the Titanic) have been portrayed in multiple media, with fictionalized elements, these people and events are not themselves "works", and therefore do not fall within the scope of this list.
Note: This list excludes myth legends and fairy tales with no known author.
Also, note that the works of the original author might be fully or partly in the public domain.