Digital book publisher Coliloquy's e-books that allow readers to choose elements of the narrative.

Digital book publisher Coliloquy, which touts itself as “the future of digital publishing,” is pushing the envelope on interactivity with fiction e-books that allow readers to choose elements of the narrative. Coliloquy then delivers the data gathered from readers’ choices back to authors, who might use the insights to shape the story arc of sequels or even how their characters look and behave. Down the road, publishers and booksellers may also find value in the data, which can show how engaged book buyers are in a story and whether they finished a book.

The authors of a Coliloquy romance series learned that their fans prefer a hero with dark hair, green eyes, a muscular build and a moderate amount of chest hair, as the Wall Street Journal reported. And a Coliloquy blog post reveals that two-thirds of readers choose the “steamiest” option for a romance title in which explicitness is customizable. Coliloquy has published eight books since launching in January and has deals with 17 authors.