Ok here is an idea of a game I like to call "Tag". It also happens to take place in an original world, in a town called Icarus Fell.
Basically it's sort of like Hurt and Heal. There are Fallen Angels and there are the Agents of Providence
For some basic lore, The villagers like to fantasise that the lake next to their...village was where Icarus fell from the sky. But in fact, it was where Lucifer fell from his Expulsion from Heaven.
The town has always been a cursed place, abnormal things seem to happen there all the time, The Cardinal Sins run rampart there, as do The Dragon's fallen servants
There will be references to Islam, Christianity and Judaism (so bear with me) and roles relating to their teachings.
--------------------
I'm not completely set with the roles and things, but the general concept I just want to run through you guys.
There are the Villagers faction, the Agents of Providence and the Servants of Dragon. Every century, Providence attempts to "clean up" the town and close down the operations of the Servants. Some times they succeed, sometimes they don't, but the Servants eventually Reincarnate in new hosts.
The Villager faction are in a state of flux being Corrupted and Cleansed constantly. Someone who starts as a villager can end up as any faction. The original Agents have a doc that stays with only themselves. As do the Servants. There will be items in circulation that can provide a player with temporary powers such as PM creation etc.
When someone gets corrupted, they cannot see the Servant's doc and vice versa. They get a PM saying that they have been Corrupted or Cleansed as well as any powers randomly gained.
The Cardinal Sins are a random occurrence and Possess a player, making him instantly a Servant as long as they live. If a Servant dies, the players he has had a hand in Corrupting (explain in detail later) get Released and are Villagers again. If an Agent dies, the people they have cleansed, stay cleansed but the other Agents get the power of the dead angel split between them (minor boosts depending on the stacks).
The Agents win if the Servants are successfully killed or if the Cleansed outnumber the Corrupted. And the Servants win if they outnumber the Agents and the Cleansed.
If a player is killed then a random player is bestowed a Secret Word. The word allows the player to convene with the Dead via the GM or Co GM with a 100 word message. The answer is recorded over the Night cycle and returned to the player the next day should they still be alive.