Game Science: Foundations and Perspectives

<jats:p> Background. Game studies offer cross-disciplinary perspectives, but the body of knowledge is not yet in the form of a cohesive game science paradigm. Klabbers (2018a) argues that a comprehensive and coherent view on game science is needed that connects three levels of inquiry: the philosophy of science level, the science level, and the application level. </jats:p><jats:p> Aim. This single-theme symposium issue On the Architecture of Game Science is especially devoted to the reflection and discussion on the foundations and principles of gaming and simulation. </jats:p><jats:p> Method. Raising a debate among scholars and professionals, addressing the questions and frame-of-reference presented in the introductory article of Klabbers (2018a) and completed by his rebuttal. </jats:p><jats:p> Results. The contributions range from the linkages between game science and complex social systems design through gaming simulation, to gamification science, and game studies, focusing on the ludosphere and the growing field of digital games. </jats:p><jats:p> Conclusion. The articles present an overview of the current state of the art, craft, and science of gaming simulation, gamification and game studies. They present a stimulating and challenging debate, and a good basis for advancing the principles and foundations of game science. </jats:p>