The early days when digital games were new, harmless and niche are long gone. Today's games can simulate battlefields, predict disaster, and crash markets. We are faced with a diversity of play and the ubiquity of games, making them not only a popular medium, but the leading medium of contemporary society.Based on the keynote lectures held at DiGRA2015, Diversity of Play provides a critical view on the current state of digital games from theoretical, artistic, and practical perspectives.With an interview with Karen Palmer and essays by Astrid Ensslin, Mathias Fuchs, Tanya Krzywinska, and Markus Rautzenberg, Diversity of Play explores the uncanny in games, the power of "unnatural" narratives, and the exceptions and uncertainties of digital ludic environments.