I don't know how many Zombie Mafia games there have been, but I did have my failed Zombie game.
The idea of special accounts like in the Zelda mafia is appealing.
Or The Thing Mafia.
At any point the Thing can take over an account. We wouldn't know who is The Thing and who is a player.
When they've been infected the password changes. They're out the game.
The game should start off with 2 strains of The Thing. Competing against each other and Townies.
RJ MacReady is the Detective - he does a blood test every night
Dr. Copper can protect a player each night. He can only protect himself one time.
Childs - Childs is super cool. That's why he can change a players mind on the vote.
Gary- Gary has a gun, but he doesn't have bullets after shooting the Norwegian. If MacReady does a test on Gary, then Gary gets gun power. He then gets to shoot a player every night except MacReady. If Gary becomes infected Gary shoots himself.
Dr. Blair is the Killer - Nobodies getting out alive. The risk of a global infection is too high. He wins if he is the only person left.
Thing 1 - Can take over an account each night. As time goes by he acquires more accounts. This player will pretend to be other players. If Thing 1 tries takes over a Thing 2 account it assimilates that clone. The clone becomes a perfect clone and stays in the game.
Thing 2 - A different form of Thing. This player can take over a player each night. But it is imperfect. Its imitations die after 2 nights. At any point in the game there can only be two. The original dies as well. If Thing 2 tries to take over a Thing 1 strain it dies. If all Thing 1 clones die Thing 2 evolves and can make perfect clones.
Things do not earn player skills, but they do earn their memories.
The thing wins if there are no more townies left.
The townies win if there are no more things and no dr blair left.
Dr. Blair wins if he is the only one left.
There are probably issues that need to be worked out.
This thing would have to be townie heavy as the Thing grows each night.
The possibilities in this game are endless. It probably should be played more than once.