Introduction to the GI‐Dagstuhl Book on Entertainment Computing and Serious Games.- A Brief History of Games.- Ethical Stewardship: Designing Serious Games Seriously.- The Serious Games Ecosystem: Interdisciplinary and Intercontextual Praxis.- Processes and Models for Serious Game Design and Development.- Taxonomy of Game Development Approaches.- Serious Games Architectures and Engines.- Content Generation for Serious Games.- Games for Learning.- Games for Health.- Serious Games Evaluation: Process, Models and Concepts.- The Experimental Method as an Evaluation Tool in Serious Games Research and Development.- Operationalization and Measurement of Evaluation Constructs.- Personalized and Adaptive Serious Games.- Embodied Interaction in Play: Body‐Based and Natural Interaction in Games.- Affective Computing in Games.- Social Network Games.- Pervasive Games.- Storytelling in Serious Games.