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Vengeful Mafia

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Name:
  • Vengeful Mafia
Setup Size:
Players:
  • 5
Setup Type:
Designer:

Vengeful is a 5-player Open Setup devised by Kelly Chen.

Setup

The following roles are used:

  • 1 Godfather
  • 1 Mafia Goon
  • 3 Vanilla Townies

Mechanics

The game uses standard mafia rules, with the following exceptions and details:

  • Nightless. The mafia have no night kill.
  • If the godfather is lynched at any point, the town immediately wins. (This is the only special quality of the godfather.)
  • If, on Day 1 only, one of the townies is lynched, this townie immediately gets to make a kill. (See Vengeful)
  • The town does not automatically win by having the godfather killed in this way.
  • Mafia wins when there are at least as many mafia as townies, and the town doesn't have a vengeful kill to use.

Notes

Assuming all lynch and vengeance decisions are made randomly, mafia will win 60% of games and town will win 40%.

The mafia's win odds are:

  • 20% chance of godfather lynch D1 * 0% chance of mafia win in this case +
  • 20% chance of second mafia lynch D1 * 75% chance to survive final four * 67% chance to survive final three +
  • 60% chance of townie lynch D1 *
    • (50% chance of vig kill targeting a townie +
    • 50% chance of vig kill targeting mafia * 67% chance to survive final three)

The current statistics are:

  • Total Games: 65
  • Town Win: 38.46%
  • Scum Win: 61.54%
  • Draw: 0%

Myths

  1. Mafia should be able to win by quicklynching;
    However: Due to the lynched townie's vengeful kill, it's not likely that the mafia will be able to pull this off without losing a member. If it's obvious who the mafia are, one will be vengekilled, and the other lynched on Day 2.
  1. Getting a successful vengekill D1 is almost as good as lynching scum on D1.
    However: If the town lynches one of the mafia D1, the town's odds of winning become 75%: 100% if the godfather is lynched, or 50% if the second mafia is lynched. On the other hand, when a townie is lynched D1, the town's odds drop to 16.7%: There is only a 50% chance that the town can even continue the game (by getting a mafia member killed), and in this case there is only a 33% chance of going on to correctly lynch the remaining mafia in the final 3.

Variations

Seven-player variant

This version, for seven players, has nearly the same (actually 58.86%/41.14%) 60%/40% win probabilities. It has these differences:

  • There are 3 mafia (one of whom is godfather) and 4 townies.
  • It is still true that if the godfather is ever lynched (not vengekilled), the town automatically wins.
  • A lynched townie gets to make a vengekill only when it is "Lynch or Lose" (i.e., if a vengekill were not made, mafia would immediately win) and there are at least four players for the townie to pick from.

History

History
Open 7 - (Town Win)
Open 8 - (Mafia Win)
Open 15 - (Mafia Win)
Open 16 - (Mafia Win)
Open 26 - (Abandoned)
Open 49 - (Mafia Win)
Open 58 - (Town Win)
Open 64 - (Town Win)
Open 75 - (Abandoned)
Open 77 - (Town Win)
Open 92 - (Town Win)
Open 123 - (Town Win)
Open 130 - (Mafia Win)
Open 147 - (Mafia Win)
Open 151 - (Mafia Win)
Open 157 - (Mafia Win)
Open 158 - (Mafia Win)
Open 168 - (Mafia Win)
Open 195 - (Mafia Win)
Open 207 - (Mafia Win)
Open 222 - (Mafia Win)
Open 224 - (Town Win)
Open 229 - (Town Win)
Open 232 - (Mafia Win)
Open 234 - (Mafia Win)
Open 237 - (Town Win)
Open 246 - (Mafia Win)
Open 261 - (Town Win)
Open 273 - (Mafia Win)
Open 286 - (Town Win)
Open 351.1 - (Town Win)
Open 351.2 - (Town Win)
Open 400.1 - (Town Win)
Open 400.2 - (Mafia Win)
Open 412.1 - (Mafia Win)
Open 412.2 - (Mafia Win)
Open 451.1 - (Mafia Win)
Open 451.2 - (Mafia Win)
Open 460 - (Town Win)
Micro 2 - (Town Win)
Micro 26 - (Town Win)
Micro 37 - (Mafia Win)
Micro 40 - (Mafia Win)
Micro 43 - (Town Win)
Micro 48 - (Mafia Win)
Micro 50 - (Town Win)
Micro 51 - (Mafia Win)
Micro 55 - (Mafia Win)
Micro 62 - (Town Win)
Micro 64 - (Mafia Win)
Micro 72 - (Mafia Win)
Micro 84 - (Mafia Win)
Micro 85 - (Town Win)
Micro 91 - (Abandoned)
Micro 97 - (Town Win)
Micro 101 - (Mafia Win)
Micro 103 - (Town Win)
Micro 104 - (Mafia Win)
Micro 108 - (Mafia Win)
Micro 143 - (Mafia Win)
Micro 160 - (Mafia Win)
Micro 165 - (Town Win)
Micro 265 - (Mafia Win)
Micro 270 - (Town Win)
Micro 344 - (Mafia Win)
Micro 354 - (Mafia Win)
Micro 420 - (Mafia Win)
Micro 478 - (Mafia Win)
Micro 776 - (Town Win)

The initial setup included 2 generic mafia and 3 townies. Anyone who died Day 1 was able to submit a nightkill, townie or scum, essentially keeping the town always at Lynch or Lose. The odds strongly favored mafia (76.7%), and skilled players could easily manipulate the town. This thinking led to Rosso Carne developing the so-called "Vengeful Gambit." Night 0, he told his scum partner to make small slips, and he would call out every single one of them continuously, and push extremely hard for his partner's lynch. After pushing the gambit, either Rosso was lynched, revealing scum, and half-confirming his partner, or his partner is lynched, making the town's trust of Rosso rise. Either way, the lynched mafia could make a nightkill, and with a town at LyLo day 2, scum would ride to an easy victory. In his next game, Rosso played smooth and actually made good arguments, and through reverse psychology, led to another scum win. The early games had no recorded town wins.

The early scum dominance (and indifference of scum to being lynched) led Kelly to add the rule saying a lynched mafioso would not get a nightkill. If town lynched good day 1, it would be 4v1 day 2. Still, this did not help town enough, as no town wins have been seen with this setup.

The next and current step in the evolution of this game is splitting the mafia into a GF and vanilla mafia. If the GF is ever lynched, the town wins. If the vanilla is lynched day 1, it goes to day 2. This greatly decreased the gambit play, as it was risky to obviously expose the mafia if one lynch could result in a loss.

One previous trend was Mastermind of Sin's "pairing" system, wherein he made pairs of the other 4 players, lynched one of a pair, and if that person was not scum, they vengekilled the other person in the pair. The obvious problem is that if MoS is scum, he can manipulate the pairings to make conditions for a scum win easy. This led to his being lynched at least three times for making pairings.

One factor that led to increased town wins early on (pre 2007) was that it became much rarer to see townies ask to be lynched, or be obliged if they did. The town was even managing to lynch the godfather D1, which formerly never happened. Players seemed to be putting more time into creating and looking over voting patterns.

In 2010, Open 234 set a record for fastest non-Marathon Mafia game on the site.