The popular mobile game based on "The Simpsons" is called "The Simpsons: Tapped Out." It is a freemium city-building game that allows players to create and manage their own version of Springfield, the fictional town where the show is set. In the game, players can complete quests, build various structures and landmarks, unlock characters, and interact with the beloved characters from the TV series. "The Simpsons: Tapped Out" has gained a large and dedicated fanbase since its release and continues to receive updates and new content.