i have a feeling this bloodmoon concept has been around for a long long time
i asked quite a few years ago if the game could be modded in a dungeon and dragons style where there were some players and a dm, both of whom had points, the players for gear and stats and the dm for traps and monsters, with the aim of the players trying to get the dms treasure.
i had a single word answer from @gazz - yes
i am still waiting for the final version before i try to do exactly this.
btw whatever happened to gazz?