In Making Games, Stefan Werning considers the role of tools (primarily but not exclusively software), their design affordances, and the role they play as sociotechnical actors. Drawing on a wide variety of case studies, Werning argues that production tools shape the aesthetics and political economy of games as an expressive medium. He frames game-making as a (meta)game in itself and shows that tools, like games, have their own procedural rhetoric and should not always be conceived simply in terms of optimization and best practices.