Sandman
A surreal RPG scenario series where the (pre-made) player characters wake up to find they have no memory of who they are or how they came to be there. The published game was originally intended to be in a contest to identify who the PC's are¸ but folded. PC abilities would slowly be revealed in the published scenarios -- clues as to their identity. The system is a percentile system with a universal action table¸ a simplified version of the Chill mechanics. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim"