How do games express meaning and participate in societal development? A significant contribution to the scholarly efforts that seek to answer such questions takes the rule-based properties of games as its starting point. Termed Procedural Rhetoric, the theory is tightly interwoven with major research questions in Game Studies, yet is under-researched and lacks clarity in several respects. This paper conducts an exploratory, qualitative literature review of the theory to address the lack of information about accumulated knowledge. It discovers new perspectives that may help chart a future for the theory and for Game Studies more broadly. Three possible paths forward are also outlined. A New Agenda is suggested in which game rules and procedures are (re)instated at the core of the analysis but new perspectives are embraced concerning the role of players and of developers, the societal context, and the contributions of the researchers and the educators who study them.