We created Justice: The Game, an educational, role-immersion game designed to be used in philosophy courses. We seek to describe Justice in sufficent detail so that it is understandable to readers not already familiar with role-immersion pedagogy. We hope some instructors will be sufficiently interested in using the game. In addition to describing the game we also evaluate it, thereby highlighting the pedagogical potential of role-immersion games designed to teach political philosophy. We analyze the game by drawing on our observations (...) as designers and playtesters of Justice, along with feedback from students obtained in focus-groups conducted shortly after playtesting ended. We present evidence that Justice, compared to conventional instructional methods alone, plausibly enhances student learning of philosophical skills and content by requiring them to practice those skills and put their content-area knowledge to use in a highly-motivating and engaging context. (shrink)