Back in the late '70s thru to the late '90s, Choose Your Own Adventure type books were popular with middle-graders and young adults. In these stories, the character's fate is in the readers' hands, as they must decide where to go, what to do and which page to turn to.
Though these types of books are nearly extinct for young adults, there are several chapter book series for ages 7-12 being written with a "Choose Your Own Adventure" theme, like the new You Choose Stories starring those loveable Mystery Inc. Gang.
Scooby-Doo!: The Secret of the Sea Creature finds Fred Jones Jr., Daphne Blake, Velma Dinkley, Shaggy and Scooby-Doo arriving at the Wild-World Beach for a much needed R&R. The gang splits up upon arriving, as Fed wants to go snorkeling, Daphne wants to go kite-surfing, Daphne wants to go hunting for shells and Shaggy and Scooby-Doo just want to find something eat.