The Shab-al-Hiri Roach
A darkly comedic horror one-shot role-playing game about an evil Sumerian mind-controlling cockroach preying on the faculty in a small New England university campus in 1919. It uses a GM-less narrational system¸ where players compete to gain academic Reputation by bidding to winning one of a series of narrated scenes¸ driven by drawn cards. The winner of the scene is the one who rolls the highest number on the dice. If you are possessed by the Roach¸ you roll a massive d12. However¸ if you end the game possessed by the Roach¸ you lose. To lose it¸ you have to regurgitate the Roach¸ by subliming away something you care about¸ which makes your dice weaker. The game comes with a packet of 40 cards and a rubber cockroach. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim