Digital technology can make cities smart. City management can make use of information that can be extracted from databases in which data is collected about energy consumption, traffic behavior, waste management, human behavior in public environments, and opinions of the general public, for example as they can be collected from social media. Digital technology can also make cities playful, allow citizens to engage in playful and entertaining activities that help to make them enjoy daily and sometimes boring activities such as commuting, working, career, educational and social obligations. In this talk, we investigate how sensors and actuators can augment the urban environment and be used to design playful applications. Developments in Augmented Reality that enable (future) urban play will be discussed. We discuss how ideas about playable cities have developed and pay attention to the criticism of the concept of playable cities that emerged in recent years. This leads to the question of who will create and own your augmented reality city in the future.