"Poptropica is a massively multiplayer online game and virtual world, targeted at children ages 6 to 15, where players can travel, play games, compete in head-to-head competition, and communicate safely with each other. There is a role-playing component as players are encouraged to finish "island missions" and get medallions."
There is a lot of critical thinking involved in this game. Can you complete a world in one day? Can you collaborate with others to figure out the answers?