In , pioneering game designer and instructor Michael Sellers situates game design practices in a strong theoretical framework of systems thinking, enabling designers to think more deeply and clearly about their work, so they can produce better, more engaging games for any device or platform. Sellers offers a deep unifying framework in which practical game design best practices and proven systems thinking theory reinforce each other, helping game designers understand what they are trying to accomplish and the best ways to achieve it. Drawing on 20+ years of experience designing games, launching game studios, and teaching game design, Sellers explains: