Liminal Space is a pen-and-paper roleplaying game designed to facilitate performative, personalized, and critical exploration of identity, value and truth dissensus; contemporary social, technological, political, and environmental issues; and modes of relating to socio-technical change, instability, and uncertainty. Pen-and-paper roleplaying games emerge from a 40-year history as an entertainment medium, but in recent decades have displayed the ability to personally speak to more "serious" issues. Mechanically, they combine elements of classroom or public-engagement, pedagogic, roleplaying exercises with benefits or participatory scenario construction, allowing players to immerse themselves in bespoke situations reflecting their personal interests, anxieties, and pedagogic aims and to reflexively and critically engage with contested truths or social disruptions in a safe space. Formal studies of roleplaying games are sparse, and I, the author, hope that Liminal Space can draw more study to a unique communication, entertainments, and performance medium and to the unique communities that surround it.