A model of Social Contract originally suggested by Brian Gleichman on rec.games.frp.advocacy. It is a rating system for morality, suggesting about the level of nastiness which is allowed (i.e. killing, torture, rape, etc.). What makes it distinct is that it distinguishes between PC-vs-PC, PC-vs-NPC, NPC-vs-PC, and NPC-vs-NPC.

References:

• Morality in Campaigns: An Interaction Model