The novel—Grossman's first—was written during his tenure as a video game designer. The book uses characters, settings, and storylines generally associated with comic books and superhero fiction, but is written entirely in prose. The story explores how superheroes cope with their powers and interact with one another. The potential motivations and perspectives of supervillains are also examined. Grossman's book has been variously described as clever, engaging, and fun—but overstuffed with comic book tropes. An audiobook was released along with the hardcover edition, while a movie has been in development since 2008.