Poptropica is an online adventure world made up of islands. Each island is its own story with its own characters, problems and a quest to solve from start to finish. Some of the quests were written by Jeff Kinney, the author of the Diary of a Wimpy Kid books, which shows in the jokes and the odd characters you meet along the way. It is a gentle game with no time pressure, so it works well for younger players and for anyone who likes point-and-click puzzles.
Walk around each island, talk to the people you meet and collect items that seem useful. Most puzzles are solved by bringing the right item to the right place or by noticing a clue in a conversation. Finishing an island's quest earns you a medal. Between adventures you can change your character's outfit and hairstyle, decorate your clubhouse, hang out with friends and adopt a pet that follows you on your travels.