Alright, I have 13. I'm stopping sign-ups. I think I will use an Epic setup, or a variant thereof.
Alright. First off, to answer questions and set ground rules.
Each player will receive a role. This role will be determined randomly (rather, pseudorandomly, since I'll probably write a brief program to distribute roles. You are able to claim this role publicly, but this is your formal warning that it could potentially be used to your disadvantage. If the Mafia has a hooker on their side, you might want to consider not claiming, lest you be rendered unable to use your role's ability. If you are a Doctor, you probably don't want to claim either, because, well, you can't save yourself. Note that Mafia roles should only claim to each other, not to the town. Role-sharing (telling someone else your role just for the hell of it, whether clear or not) is especially prohibited. See the next heading.
PS: You will not know what roles are in the game unless they are revealed to you.
Messaging other players is restricted. This is more to keep the game in check than anything. I mostly want to be in control of how the game plays. If players are randomly messaging each other, I can't do this and therefore I will kick your ass.
Mafia members are allowed to message each other at night only. This is so that they can coordinate their night kill. They are allowed to share their roles with other mafia members. If any other roles are allowed to message, you will be told in your role's description. If you are not allowed to message, you are NOT permitted to.
Any questions should be asked now. Night 1 will begin at roughly 2AM tonight Eastern Daylight Time. If you are unfamiliar with Mafia at all, you might want to ask now.