"Games without Frontiers consists of five parts: The first part outlines the young history of game studies as an academic discipline and situates the work in to its contexts. The second part is a cornerstone of the work, as it documents a theory of what parts games are made of. The theory of game elements, as the author calls it, defines nine different elements found across games, and the theory functions as the reference point for the concepts and methods introduced in later chapters. Part two also introduces an analysis method based on the theory, and a card game inspired by the theory and designed by the author. Part three focuses on the psychological nature of game play. It introduces a theory of player experience, i.e. a theoretical framework for understanding experiences of playing games from the perspectives of cognition, emotion, pleasure, and entertainment. Study of the psychology of goals and emotions is a central aspect of part three, and it yields a number of observations of playing games as goal-orientated activity that entertains planning and performing in the face of goals. Part four, %u2018Studies in game systems%u2019, focuses in detail into certain aspects of games, such as genre and the ways that games communicate and persuade their players. The final and fifth part summarises the work by applying the theories formulated into practice by defining a set of analysis methods for studying games and the play experiences they facilitate."