The convergence of smartphones GPS the Internet and social networks has given rise to a playful educational and social media known as locationbased and hybrid reality games. The essays in this book investigate this new phenomenon and provide a broad overview of the emerging field of locationaware mobile games highlighting critical social scientific and design approaches to these types of games and drawing attention to the social and cultural implications of mobile technologies in contemporary society. With a comprehensive approach that includes theory design and education this edited volume is one of the first scholarly works to engage the emerging area of multiuser locationbased mobile games and hybrid reality games.