A Game in Three Acts About Ritual Sacrifice and the Wages of Sin
From the introduction:
In this game, players will take on the role of townsfolk who were randomly chosen to provide their own flesh as sacrifice to the Sin-Eater as penance for their unrighteousness. It is not necessary that the flesh be given equally, but it must be gathered before the beast arrives.
The game uses several custom cards - they are simple and can be created from index cards; the document describes how to make them.