Ages 5-8 | Grade Level 3 | Choose from 16 Possible Endings Written in the second-person, the reader is the hero of the story who makes decisions along the way. YOU live in an underwater palace where you celebrate and protect the many species of the ocean. Just nearby is Princess Island, a royal summer camp. Will YOU meet a new friend on shore and teach them the importance of protecting the seas? Choose Your Own Adventure is the 4th bestselling children's book series of all time. Empowering generations of children through choice, it is widely commended for its appeal to reluctant readers.