A New York Times bestseller based on a concept by Wimpy Kid author Jeff Kinney, Mystery of the Map is the first book in Poptropica, a graphic novel adventure series by Jack Chabert and Kory Merritt. Oliver, Mya, and Jorge take a ride in a hot-air balloon, only to crash-land on an unknown island filled with extinct animals and a horde of angry Vikings. Welcome to Poptropica, an uncharted group of islands...