Simplify the following text for a Grade 7 native English-speaking person.
Original: Clancy has written several nonfiction books about various branches of the U.S. armed forces ( see non-fiction listing , below ) . Clancy has also branded several lines of books and video games with his name that are written by other authors , following premises or storylines generally in keeping with Clancy 's works :
Simplified: Several books that are written by other writers have Tom Clancy 's name on them , because the books are written in the same way and have the same stories as his own .