I fully intend to start with the easy games here and keep my more intricate designs for after we establish a player base.
Basic outline has been mentioned but to keep it all in one post:
One organizer makes a setup. Normal is a playerbase dividable by 3. 1/3th or 1/4th mafia, 2/3th or 3/4th town, depending on the amount of extra abilities in the game.
A round is divided in day and night.
In day everyone posts and tries to find mafiates by voting for them. If someone has a majority of votes, or a deadline has passed the person with the most votes is killed and we move to night.
In night no-one can talk in the thread. Mafia and special roles send PMs to the organizer with their role targets.
When all results are in, the organizer reopens day with the announcement that player x was killed by the mafia and the cycle continues anew until a side wins.
In classic games you have the following roles:
- Mafia. A team made of a third of the player base. They know from each other who they are. Each day they try to keep pressure off themselves. Each night they can PM the organizer to kill someone as team.
- Vanilla town. A basic player without special abilities. Tries to find mafiates through posting habits.
- Cop. A town player with the extra ability to investigate someone at night. They PM the organizer with a target, after which the organizer will send a PM back with the result if said target is town or mafia.
- Doctor. A town player with the extra ability to protect someone at night. They PM the organizer with a target. If that target would die that night, they live instead.
There are more noncomplex roles possible, but I think those are best mentioned in a big sticky about what mafia is all about. This is just the basics.
The goal for Town is to kill all mafiates by lynching them at the end of each day. The goal for Mafia is to kill enough townies so they end up being 50% of the player base (because at that point, lynching mafiates is impossible because a majority can never be reached anymore).
Of course, because mafia is mostly about information gathering, when killed you are no longer allowed to post in the thread and out-of-thread discussion is strictly prohibited, unless specified by the organizer.