Superhero City was launched in June 2009 as a role-playing game on Facebook that allowed users to take on superhero identities. Within a month it gained thousands of dedicated fans. Over the following years it grew significantly, adding new features, locations, events and tournaments. It engaged users through collaborative role-playing and competitive gameplay between leagues. The document provides a retrospective on the game's development history and milestones from 2009 to 2010.