Mafia (party game)
Mafia (party game) Designer(s) Dimitry Davidoff Players 4 or more1 Age range 12 and up Skill(s) required Strategic thought
1See Basic gameplay below.
2Varies greatly with setting; see online play.
Mafia (Russian: Ма́фия, also known as Werewolf, Assassin or Witch Hunt) is a party game created in the USSR by Dimitry Davidoff in 1986, modelling a battle between an informed minority and an uninformed majority. Players are secretly assigned roles: either "mafia", who know each other; or "townspeople", who know only the number of mafia amongst them. In the game's "night" phase the mafia covertly 'murder' a townsperson. During the day phase, all of the surviving players debate the identities of the mafia and vote to eliminate a suspect. Play continues until all of the mafia have been eliminated, or until the mafia outnumber the townspeople. A typical game starts with seven townspeople and two Mafiosi.
Dimma Davidoff (Russian: Дми́трий Давы́дов, Dmitriy Davydov) is generally acknowledged as the game's creator. He dates the first game to spring 1986 at the Psychology Department of Moscow State University, spreading to classrooms, dorms, and summer camps of Moscow University. Wired attributes the creation to Davidoff but dates the first game to 1987, with 1986 being the year in which "Davidoff was starting the work which would produce Mafia". He developed the game to combine psychology research with his duties teaching high school students. The game became popular in other Soviet colleges and schools and in the 1990s it began to be played in Europe (Sweden, Germany, Romania, Slovakia, Czech Republic, Hungary, Poland, England, Norway) and then the United States.
Andrew Plotkin gave the rules a Werewolf theme in 1997 ("Mafia aren't that big a cultural reference. I wanted to find a theme that fit hidden enemies who look normal during the day, but are murderous at night"). Looney Labs has sold a derivative of this version as Are You a Werewolf?, as have Asmodee Editions under the title Werewolves of Millers Hollow, Mayfair Games as Lupus in Tabula (Latin for Wolves at the Table) and Bezier Games as Ted Alspach's Ultimate Werewolf: Ultimate Edition.
In 1998 the Kaliningrad Higher school of the Internal Affairs Ministry published the methodical textbook "Nonverbal communications. Developing role-playing games 'Mafia' and 'Murderer'" for a course on "Visual psychodiagnostics", to teach various methods of reading body language and nonverbal signals.
A variation of Mafia was used to promote the film Cry Wolf (2005), having one wolf and a number of sheep, with the computer acting as shepherd.
In March 2006 Ernest Fedorov was running a "Mafia Club" in Kiev, using his own patented variation of the rules. The club organizes games, rates players, and awards prizes (including a Sicily trip for their tournament-series champion).
One person is the game's Narrator (popularly called the "God") - they moderate the game, rather than participating. Everyone else is dealt a card that gives them their secret role as a player.
- Townspeople (Village-sided)
- Mafia (Mafia-sided, win by killing off/outnumbering villagers)
- Inspector (Village-sided, can inspect mafia members)
- Doctor (Village-sided, can elect someone to save in the night)
The Narrator tells everyone to close their eyes ("It is now nighttime and all the villagers are asleep..."). The night phase can optionally be accompanied by all players tapping gently to mask any giveaway sounds of player movement. However, no suspicions are to be based on actions in the night.
Each night, the Narrator tells the Mafia to open their eyes and acknowledge their fellow members. They kill off one of the other players by silently gesturing to indicate their target and to show unanimity. Then the Narrator instructs the mafia members to "sleep" (close their eyes again).
Now the Inspector will open his or her eyes and point at a suspect; if that player is mafia-sided, the narrator nods. Then the Narrator instructs the Inspector to "sleep" and the Doctor to open his or her eyes; he or she points at someone to save, then goes back to sleep.
The Narrator tells everyone to wake up. Unless the doctor and the mafia selected the same target a murder is announced, sometimes with a little narrative detail. (For example, "David was shot seven times, stabbed three times, and drowned in the river.") This player is "dead" and may no longer participate in the game in any way.
During the daytime phase, the players deliberate over which suspected Mafia member they wish to nominate for lynching. Once nominations are made, the narrator administers an election between the nominees, in which all players vote - whoever receives the most votes is lynched; they are "dead," and reveal their role card, showing the other players their true alignment and providing reliable information to the innocent players.
Because players have less information and more freedom to deliberate during the day, the day phase tends to be longer than the night phase. The day phase either has a set time limit, or continues until a lynch has been performed.
If all Mafia members are killed, then the Townspeople win the game. If the villagers are outnumbered by the Mafia during the day, then the Mafia win.
Naming for the various roles, factions, and other elements of play is theme dependent and has limitless variation. The following is in no way an exhaustive list, but gives standard alternative names that are widely recognized among players:
- Narrator - the person running the game is often called God, Host, Facilitator, Moderator, Judge, Mayor (although the Mayor is a player role in other variants) or Storyteller. Some variants call for multiple narrators, each having a distinct role and name.
- The Mafia players have be rethemed as Werewolves, Worshippers, Assassin, Wolves, Scum, Killers, or Witches.
- Sheriff (alternatively, Informant, Seer, Commander, Detective, Inspector, Leader, King, Angel of Knowledge, Cop, Police, or Prophet)
- Nurse (alternatively, Doctor, Bodyguard, Healer, Medic, Priest, Witch, Saving Grace, or Guardian Angel)
- Townspeople (alternatively, Citizens, Villagers, Innocents, Sheep, Townies, Vanillas, or Civilians)
There may be additional night-time phases, allowing special-role characters to do "business" during the night, either before or after the Mafia.
In some variants, the Narrator may conceal the role or alignment of killed players, or allow killed players the choice of revealing their own card.
These additional roles are named differently in the many versions of Mafia, for thematic flavor, or historical reasons. Also, the same role-name can have differing functions across different versions of the game. What follows is a general list of role types found in Mafia variants; since the specific names vary by milieu it must be non-exhaustive.
Players with these roles use their own night-phase to discover something about other players. Though the standard game now includes the basic "Detective", these roles are optional, and games can exclude them entirely (such as the "stool pigeon" variant, or Davidoff's original rules).
Investigative roles (standard)
- Allied with the Innocents, the "Detective" can detect whether a player is a mafioso. They will typically "wake up", and point at one person; the Narrator will silently indicate to the Detective whether that player is Mafia or Innocent. In some versions of the game, the Detective's investigation result is announced publicly by the Narrator, for example "the Detective found a Mafioso!". More commonly, no announcement is made. As with other roles, which player is the detective is not generally known, leaving anyone the option of pretending to be the Detective.
- A "Detective" is usually included in modern games. For example, somebody is always assigned this role in all commercial card game versions, and almost all internet-based, and most face-to-face games start with at least one detective. Multiple detectives either act in separate night phases (unaware of the identities of other detectives) or work together as "the police" (an "association" role).
Investigative roles (less common)
- —"Psychic", "Wizard", "Fortune Teller", "Oracle", etc.
- "Psychic", "Psychologist", or "Sorcerer"-type investigators can determine other players' roles, rather than their alignments. Roles which detect other roles are usually implemented in the same way as the Detective's ability to determine alignment. For example: the Psychologist points to a player (at night) for a "Thumbs-up" from the moderator if the "Vigilante" is pointed to. A "Tracker" may see what someone's night action was, or the target of their action.
- Information revealed to investigators is fallible (in more complicated variants). Online versions can give information with a confidence level, and in other variants the Narrator deceives the Detective by showing all players as Innocent, all as Guilty, giving reversed results, or random information (these can be termed as "Naive", "Paranoid", "Insane", or "Random" respectively). Additionally, some Alignment roles give immunity to successful investigation.
- In some games, there are Mafia Detectives, who have the power of a normal detective but are on the Mafia side. The "Super Commandant" has the standard power of a "Detective", while also protecting the investigated from night-time attack.
- —"Witness", "Child", "Little Girl", etc.
- Instead of having to investigate, some innocent roles give complete information on the entire mafia: The "witness" is told who the mafia are during the first night, while the mafia are not told the witness's identity (differing from the "stool pigeon" in not being a part of the mafia).
- The "Little Girl" in Werewolf and Werewolves of Miller's Hollow is allowed to secretly peek and watch as the werewolves choose their victim; if discovered doing so by the Werewolves, she dies of fright.
- —"Guardian Angel", "Doctor", "Healer", "Bodyguard", etc.
- Allied with the Innocents, the "Doctor"-type role defends others at night. Typically, they will "awaken" at night after the "Mafia" have "gone back to sleep" and point at one person to protect; that person will survive any night-time attack. They are typically allowed to protect themselves, and are commonly barred from protecting the same target on successive nights. A "Guardian Angel" can only protect others. The "Nurse" gains the Doctor's abilities if the Doctor dies. The Firefighter, or the Herbalist can protect from some night-time attacks but not others (in Werewolf, for example, they choose one person to protect with wolfsbane, but that person may still be killed by the Serial Killer). Other games limit this ability to a certain number of times.
- —"Vigilante", "Hunter", "Bomb", "Woodcutter", etc.
- Aside from Mafia, Werewolves, and Serial Killers (solitary guilty parties), the Innocents may have some roles with the ability to kill at night. The Vigilante is an "innocent" who kills every night, in his own night-time phase, in some variations, having a limited "bullet" supply for the entire game. Some variations introduce a time limit of two nights before the player in the Killing Role can exercise his right to kill again. The Bomb may only trigger if targeted at night (not necessarily for death) by another role. Variants exist where this person can kill during the daytime cycle (e.g., the Terrorist / Gravedigger), sometimes only if executed during the daytime. The "Woodcutter" or "Hunter" can take one other person with them whenever they die.
- —"Miller", "Godfather", "Alpha Wolf", "Wildcard", etc.
- Some roles can fool investigations to determine their alignments: the Miller is an Innocent who appears guilty (usually because they are an outsider); the Godfather, on the other hand, appears innocent despite being the Mafia leader. The "Alpha Wolf" or "Master Werewolf" have the same role as the Godfather in Werewolf settings.
- —"Godfather", "Traitor", "Possessed", "Undercover Cop", etc.
- The Traitor is not a mafioso, but works with their vote during the day cycle to protect the Mafia and hamper the town (he wins only with a Mafia victory). Conversely, "The rat", "stool pigeon" or "undercover cop" is a mole within the Mafia group (winning with the innocents). The "stool pigeon" may be the only optional role in play —one of the few modern forms played without an investigative role. The "stool pigeon" is often used in midwestern Mafia games.
- "Judas" is an innocent who survives but becomes a "Traitor" when lynched (or vice versa, becoming a "Rat").
- There is an alternative definition of "Godfather" role from the Alignment role Godfather (who is immune to alignment-detection). This "Godfather" behaves as a standard mafioso, but wakes again (after the Mafia sleep) for an extra kill. This Godfather-role wins only if he survives.
- —"Role-blocker", "Bus Driver", "Thief", "Barman", etc.
- These roles can stop or alter the night actions of others; for instance, they may prevent a protection or investigation from occurring, or they may change the target. The "Role-blocker" can block the Vigilante for a night, while the "Thief", "Prostitute" or "Hypnotizer" might be able to disable the powers of any selected target.
- When the "thief" is used in Werewolves, an additional townsfolk card is added before dealing, and the Thief may choose on the first night to "steal" the role of another player or to take the unused role card. The player whose role was stolen gets the unused role card and the Thief card is discarded.
- —"Godfather", "Psychiatrist", "Piper", "Cult Leader", etc.
- The Mafia Godfather may be able to recruit innocent players into his faction under certain circumstances. The Yakuza is a regular mafia player with an extra power: they may sacrifice themselves from the second night (during the night) and choose an innocent to join the mafia.
- Each night, the scientist selects a player to "cure"; if a mafioso is "cured", they awaken as an innocent. The Psychiatrist is an innocent with the ability to convert the Serial Killer into a normal innocent.
- Cult Leaders recruit "followers" at night instead of kill; they act as an independent faction, usually with the ability to talk at night. The "Piper" wins by "charming" every surviving player; she "charms" players at night, who then know each other (but not the piper) but are otherwise unaffected.
- —"Freemasons (Masons)", "Siblings", "Lovers", "Police", etc.
- Possessors of these roles know one another and what their roles are. On the innocent's side, a "Mason" usually has no special abilities, but knows the identity of all other Masons and that all Masons are also innocent. Every member of "the detectives" or the police knows all the rest, because they collaborate at night to investigate someone (sharing the powers of the "Detective" role between them).
- Sibling pairs typically consist of one Mafia and one Innocent; if one dies, both die. Cupid in Werewolves chooses a pair of "Lovers" on the first night. In this variant, the Lovers can also win the game (regardless of whether they are Mafia, Innocents, or both) by being the last two standing. In most versions, if one "Lover" is killed the other dies immediately.
- —" "Doublevoter", "Priest", "Rabble Rouser", "Lawyer", etc.
- Until the "Rabble Rouser" dies there are two lynchings per day.
- In some games there are players who can change the vote count. Some players have 2 votes (Doublevoter); some players can only cast the final vote to kill a player (Actor); cannot vote to lynch (Voteless Innocent); must delegate someone else to vote for them (Fool), or require one fewer vote to lynch (Hated Innocent). The Priest cannot place the final vote (this role is not necessarily the same as the Reanimation-role priest). The lawyer selects someone during the night, and if that person tops the lynching vote the next day, saves them (a different lawyer role releases the wills written by players killed up to that point, when she dies).
- —"Mayor", "Judge", "Sheriff", "President", etc.
- This role is taken in addition to the assigned role, and it endows the player with additional, overt, powers (particularly during the daytime). Empowerment can be random, but is usually made by vote. For instance, the "Mayor" or "Sheriff" can be elected each morning, and gain two lynching votes, or a Judge could moderate discussion in parliamentary fashion (to the advantage of their "team"). The elected "President" has the sole lynching vote.
- —"Murr", "Village Drunk", "Teenage Werewolf", etc.
- This may be a secondary role, taken in addition to the assigned role. However, it has the opposite effect, giving the bearer a handicap, like speaking only gibberish in the case of the Village Drunk, etc.
- Alternatively, it may be a standard role with a particular constraint, such as the teenage werewolf, who must say the word "werewolf" at least once each day.
- —"Silencer", "Dentist", etc.
- The Dentist may select any other player at night, and remove all of their teeth to prevent them speaking during the following day. The "Silencer" is a mafioso with the identical power, except that they may not silence the same player on successive days. The silenced individual wakes in the morning and is immediately instructed not to talk until the end of the day. They can still raise their hand to vote in live games, but being silenced in online games typically prevents any postings, including that needed to vote.
- —"Dark Background", "Priest", "Medium", "Coroner", etc.
- The "dark background" roles are standard (mafia or innocent) except for revealing a deceptive alignment when killed. The "M.E." gathers information from the killings that can help the innocents, while the "Priest" learns about the alignment of the dead in the same way that the Detective learns about the living. The Medium can interrogate dead players. While the coroner survives, the narrator will explain the means of death in all night kills.
- —"Reviver", "Governor", "Martyr", "Witch", etc.
- Revivers and "Master Revivers" are able to resurrect dead players, Master Revivers can bring the revived into their association (e.g., the Masons: see Association roles). The players resurrected by a Necromancer are converted to the Necromancer's alignment; those revived by the voodooist join a separate "zombie" group. The "Governor" can reprieve those killed during the daytime, as can the "Martyr" if he sacrifices himself. The Witch has a (single-use) revival potion. At night, she's shown who will die in the morning, and can choose to save them.
- —"Bulletproof", "Oracle", Elder", etc.
- The "Bulletproof" innocent is invulnerable at night, though usually with limits; for example, the "Elder" will survive the first night attack, but not the second.
- The Oracle has an investigative role similar to a "Seer" but also has the power to talk when inactive (talking in a "sleep" phase is usually a rule infraction).
- —"Baker", "Village Idiot", "Cobbler", etc.
- The baker is on the side of the innocents. During the night, the baker gives one player a "loaf of bread", potentially revealing his identity. If the baker dies, the innocents have just three nights to dispose of the mafia, or the innocents starve, and the mafia win. The Cobbler, "Village Idiot", or Jester has the objective of convincing the town to kill him, or is required to vote in favor of all proposed lynchings. Sometimes, successful lynching of the "Village Idiot" results in the mafia being able to kill two people that night.
Over the years, players have created Mafia variants that include additional characters and rules; some of these are listed here.
Variations on the win conditions
If there are as many mafioso as innocents in the day-phase then a mafia victory is declared immediately, under vanilla Mafia rules. (Barring the use of role powers it would then be impossible for the innocents to vote off all mafia members before all innocents are killed.) Other variants suspend this rule, and only declare the game after every member of one faction has been eliminated. There are several reasons not to end the game while innocents are alive:
- It makes the game easier to explain, and run.
- The variant may have mechanics that allow the out-numbered innocents to win (e.g. via protection or resurrection of innocents)
- Or because other win conditions are in-play for certain players, and need the game to finish to be judged.
Other win conditions that may be assigned include:
- The "Cupid and the Lovers" variant; the Lovers can also win by being the last two in the game even if one is Mafia while the other is Innocent -in these cases the game is played until a definite outcome is reached. (Even if three mafioso and two innocents remain it is important to the Lovers which of the innocents is killed.)
- If a game has a card assigned "Head Mafia" or Don role, a variation has the Innocent members win when they vote successfully for the execution of the Don, regardless if there are other surviving Mafia members remaining.
- The Survivor is a neutral player, and wins when any other team or player wins (the survivor merely needs to avoid elimination).
- To win, a player must be lynched (the "jester").
Nominees for lynching may be allowed to make a speech in their own defense. Usually, each player must vote, can only vote once and cannot vote for themselves. But some variants have a more complicated process of selecting players to be executed. Davidoff's original 'Mafia' allowed multiple day-time executions (per day), each needing only a plurality to action.
Voting variants abound, but any lynching usually requires an absolute majority of the electorate, or votes cast. So, the voting is usually not by secret ballot for multiple candidates, with the highest vote count eliminated; it is more usual for the voting to be openly resolved either by:
- A nomination or series of elections structured to ultimately offer a choice between two candidates, or
- An option to lynch (or not lynch) one suspect (with a new suspect produced if the last one survives the vote).
Another form, tie-breaking, can be had with a seance of the person who was last killed by the mafia, since night has not yet fallen and they have not yet seen the mafia during the night phase.
Optional lynch variant
The Innocents can choose not to kill anybody during the day. Although commonly unsure of Mafia identities, the Innocents are more likely to randomly kill a mafioso than are the Mafia (at night). Therefore, not lynching anyone (even at random) will typically favor the Mafia.
However, when the number of survivors is even, "No Kill" may help the Innocents; for example, when three Innocents and one mafioso remain, "No kill" gives a 1/3 chance of killing the mafioso the next day, rather than a 1/4 chance today (assuming random lynching). Lynching an innocent either day gives a Mafia win.
A public timer is set to a pre-determined length at the beginning of each day. If the players lynch someone, then the day ends immediately. If time runs out, the day is over and there is no lynching, or the person with the most votes is lynched.
Mafia killing methods
Some variants require all Mafia members to choose the same victim independently for a kill to succeed. This can be achieved either by waking the Mafia members up separately, or by having them write their kills. Under this variant, Innocent players write the word 'honest' on a piece of paper; Mafia members write the name of a player for elimination. If all the mafia notes have the same name on them, that player is considered killed by the Mafia. In some online versions of the game, a particular player (the Godfather or a designated mafioso) must send in the kill. Another variant requires the night-time vote to be secret and unanimous, but allows multiple players to be added to the execution queue to ensure unanimity.
To eliminate the inconvenience of being killed first, this variant has the Innocent killed on the first night become the Narrator. The Mafia must inform this victim of their death without revealing themselves. The writing variant works best.
Multiple, independent groups of mafia or werewolves act and win independently, giving faster game-play and the potential for "cross-fire" between the factions.
This allows players to be sent to prison as an alternative to execution. They can either be sent there by vote or at the discretion of an optional character. Imprisoned players move to a separate room, possibly with a separate narrator. Murders can happen in prison and certain roles or events can liberate players.
A similar variant is Kidnapping, which allows for a Kidnapper character to remove individuals from the game temporarily. If the kidnapper is killed (or, in some cases, investigated by an Investigative role), the kidnapped return. While kidnapped, players are inactive, and cannot watch night-time events.
A random player dies of plague each morning. A player who had targeted the plagued player the previous night may be infected.
This variant requires the Narrator to keep track of the players' lives on a piece of paper, because every player has two or more lives. This extends the game when there are too few players for the standard rules. Kills (in the night & day phases) reduce these lives, until a player reaches zero lives and is eliminated. Mafia 'kills' which reduce lives are usually not announced to the innocents.
In this variant, players are given two cards: the first contains their role, the second an attribute. Attributes were originally derived from roles that could apply to both Mafia and Innocent alignments such as Bulletproof (cannot be killed at night), Mayor (has two votes in the lynch), and Siamese Twins (more commonly known as Siblings or Lovers).
The day time rounds remain the same as players sit around a table or in a circle in the candlelit "base". The night time rounds are played roaming around the house in complete darkness. Innocents are "killed" by the werewolf tapping the victim on the shoulder in the dark. The victim must wait fifteen seconds until screaming in order to allow the werewolf to get away. Once an innocent is killed by the werewolf, everyone re-assembles in the base for the day time round. This variant of the game includes the "Little Girl" character who is allowed to collect a flash light from a prearranged place (e.g. at the bottom of the stairs) at the beginning of each night time round. Innocents who have been killed in the game become "zombies" and roam around in the dark (after a 30 second advantage on the innocents) in each night time round. Lovers need to find each other in the dark and protect each other from the werewolf.
This variant was developed by Steven Irrgang and used for a puzzle in the 2008 CISRA Puzzle Competition. He later published more formal rules so that it could be a fully playable variant. The difference from a standard game of Mafia is that players are not initially assigned roles, but rather on each day are given the probabilities describing the game's current quantum state. Each player with a non-zero probability of being a seer or a werewolf performs the appropriate night actions (which may not be effective if it is later determined that the player did not have that role). When a player is killed, the wave function collapses and the players are given updated probabilities.
Traditional Mafia re-envisioned and heavily modified by the Copenhagen Game Collective to be played in a subway metro. In this variation, players who are 'lynched' are kicked off the train (at the next stop), and must wait in shame for the following train – a kind of 'afterlife' train – to join a second, interwoven game." (Follow the link for a full description).
Mafia is commonly played online. These games last longer, and allow player's votes and words to be reviewed more easily. Online play typically means Internet forum-play, although real-time browser-based implementations are also popular.
The standard human-moderated games in forum mafia require one or two moderators: a sign up thread is created announcing the game, and once the game has sufficient players, play can begin. Mafiosi communicate via email or a similar system before submitting their kill to the moderator. The moderator then writes the appropriate death scene for those that were eliminated, and posts a dawn scene. Software can automate the moderator function, but this is rarer. Players then discuss in the forum who they should execute, followed by an execution vote. Innocents are usually forbidden in-game communication outside of the public forum.
Mafia is also played on IRC (Internet Relay Chat) using private messages to send votes and channel modes to allow private communication during the night. There's a lot of variety in IRC mafia channels, and one IRC variant includes a graphical Flash client. The film Cry_Wolf was promoted through a wolves vs sheep variant, played over AOL Instant Messenger. Versions of Mafia have also been created on BYOND and Facebook as well as for PBEM.
Fictional reality themes are common in online play, which will work with any group of well known characters. The Simpsons, Hanna Barbera, The Lord of the Rings, Lost have been used, for example, because of their extensive character sets. Players are assigned characters from the theme, with matching roles. Generic themes are also popular - such as Werewolf-theme.
Game experience and strategy
Mafia is a complicated game to model, so most analysis of optimal play has assumed both: (a) that there are only townsfolk and mafiosi, and (b) that the townsfolk never have a probability of identifying the Mafia that is better than chance. Early treatment of the game concentrated on simulation, while more recent studies have tried to derive closed-form equilibrium solutions for perfect play.
In 2006, the computer scientists Braverman, Etesami and Mossel proved that without detectives and with perfect players the randomized strategy is optimal for both citizens and mafia. They showed that when there are a large number of players and the win probability for either side is 50%, the innocent's lack of information means that the Mafia numbers need only double when the total number of players quadruple for the win chances to remain even. With simulation, they confirmed that 50 mafiosi would have almost a 50% chance to win among 10,000 players, and that when m mafiosi remain among P total players:
The Mafia's chance of victory, —When:
As the Mafia's concentration increases beyond 40% of the square root of total players, the chance of a Mafia win grows less linearly with concentration, but converges to near certainty by the time P < 3m2.
If any detectives are added to the game, Braverman et al. proved that the number of mafiosi must remain at a fixed proportion of the total number of players for their chance of winning to remain constant.
In 2008, Erlin Yao of the Chinese Academy of Sciences derived specific analytical bounds for the mafia's win probability when there are no detectives, W(m, P) when m mafioso remain among P total players:
For example, four mafioso have a 50% to 100% chance of beating twelve innocents in this model.
Results in live play
If you're trying to feign shock or anger, it's much harder to do over a long period. People accused of something they're trying to hide will start out feigning outrage -- 'How dare you ask me that?' But that will start to change to objection rather than shock, as it's psychologically very difficult to mimic emotion.
- The physiological stress of sustained lying degrades the initial ability of mafiosi to deceive the innocents, much more than a model of perfect play would predict, especially if the innocents can get the town emotionally involved in the game's outcome:
- The information revealed by the mafiosi voting patterns tells against them later in the game. One of the game's fans in the software industry, Max Ventilla, has found, "If the villagers are allowed to keep a pencil and paper, they always win."
- As players get more experienced their strategic sophistication and ability to spot and use deception increases. They will typically get better at the skills needed for playing innocents faster, being villagers more often than mafiosi.
- The Metagame aspect: Dimma Davidoff has said, "Past connections will always lose to future collaborations". When playing several Mafia games with the same people, it's more helpful to be known for honesty than for deceit. Davidoff considers that so important that he thinks the advantages of playing the mafioso role "honestly" outweigh the disadvantages.
But, the Mafia can win in live play; their best chance of winning occurs when mafioso bond with their innocent neighbours and convince those neighbours to value that bond over dispassionate analysis. The game designers Salen and Zimmerman have written that the deep emergent social game play in Mafia (combined with the fear of elimination) create ideal conditions for this.
- ^ François Haffner (1999-02-22). "Questions to Dimitry Davidoff about the creation of Mafia on the French website". Jeuxsoc.fr. http://jeuxsoc.fr/jeu/mafid. Retrieved 2011-04-11.
- ^ Andrew Plotkin's "Werewolf page History section". http://www.eblong.com/zarf/werewolf.html. quotes a 2005 email in which Davidoff explains that he brought Mafia into the Psychology department classrooms for research and it spread (as a meme) from there to dormitories and "likely over next summer, through student summer camps". He credits this game-based methodology to pioneering 1920s psychologist Lev Vygotskiy.
- ^ a b c d e f g Robertson, Margaret (2010-02-04). "Werewolf: How a parlour game became a tech phenomenon". Wired UK (Conde Nast Publications) (03.10). http://www.wired.co.uk/wired-magazine/archive/2010/03/features/werewolf?page=all. Retrieved 2010-06-06
- ^ Danopoulos, C. P.; Zirker, D., eds (December 1998). The Military and Society in the Former Eastern Bloc. Boulder: Westview Press. p. 175. ISBN 978-0813335247. OCLC 237326581. http://www.questia.com/read/98923225. "The objective is to discover who these [Mafia] people are even as they speak on behalf of Latvia's welfare, and before they eliminate people who suspect who they are."
- ^ "Werewolf A Mind Game". http://www.eblong.com/zarf/werewolf.html. is Plotkin's own description of the original Werewolf version
- ^ Macdonald, James D.. "Making Light: Comment on "Home Again"". http://nielsenhayden.com/makinglight/archives/005581.html#58859. "Thing is much like Mafia, except that the scene is an isolated Antarctic research station. The game starts with one Thing, a shape-shifter who looks and acts exactly like one of the scientists [equivalent to "townsfolk" in vanilla Mafia]. Each night, if the Thing (soon to be Things) aren't caught, they make a new Thing, until the Things outnumber the scientists, and the game is over and the Things win. (If the scientists manage to identify all the Things, the game is also over and the scientists win.) Every day the scientists can test two of their number. If the second one they test is a Thing, they can test a third. If that one is a Thing, they can test a fourth, and so on." For a more detailed description, see: Silverthorne, Lisa. "The VP Experience". http://www.drewes.org/vp_xp.html.
- ^ Kaufman, Jerry (2000-01-01). "Corflatch Progress Report #3". http://www.potlatch-sf.org/potlatch9/potflpr3.html. "John Aegard is running another event, to take place Friday at 8 p.m. John says, "Come play the game that's paralyzed two straight Clarions – MAFIA!"" Since the Clarion workshops take place during the summer, the game must have first been played at a Clarion workshop in 1998, most likely Clarion East -- see David Levine's account of Clarion West 2000, "David Levine's Clarion Journal: Week 6.". http://www.spiritone.com/~dlevine/clarion/journal/week6.html. Mafia and Thing were first taught to the annual Viable Paradise workshop by James Patrick Kelly and Steven Gould in 2001; see Silverthorne, Lisa. "The VP Experience". http://www.drewes.org/vp_xp.html.
- ^ See "Clarion, Day 33: She's mafia, I know she is!". http://st-at-clarion.livejournal.com/12315.html. ; Wilson, Alex. "Clarion Week 6: Always Bet on Black (in Mafia)!". http://www.alexwilson.com/projects/journal/clarion_week_6_mafia.php. ; Wilson, Alex. "Clarion_Mafia". http://web.mac.com/xanderwilson/iWeb/Site/clarion_mafia.html.
- ^ See "Making Light: Home Again". http://nielsenhayden.com/makinglight/archives/005581.html#58821. ; "Making Light: Traditional diversions". http://nielsenhayden.com/makinglight/archives/006896.html. ; Azure, Chris. "Viable Paradise - Day 1". http://garunya.livejournal.com/38846.html. ; Griffith, Eric. "A week in paradise". http://www.squishedfrog.com/mtblog/archives/2007/10/#001249. ; and Gordon, Barbara. "Viable Paradise, day one". http://bibsearch.blogspot.com/2006/12/viable-paradise-day-one.html. . Quoting Dvorin, Julia. "Viable Paradise: A Travelogue (Part 1)". http://www.archerwebsolutions.com/domains/yaboogie/blogs/parentheticals/2007/10/viable-paradise-a-travelogue-p.html. "After the introductions and instructions for the next day, I thought that perhaps we'd be released and I could go see the room I was to be staying in for the week and chill out a little from the travel. But such was not to be, for the agenda now turned to the important bonding activity of playing "Mafia" and "Thing". So I pushed away the cranky traveler's whininess that was stalking me, and sat down in a circle with a bunch of strangers and began to accuse them of lying and murder." Also: Gould, Steven. "Photo: semi-mandatory Mafia". http://www.flickr.com/photos/89986804@N00/1526104871/in/photostream/.
- ^ Петров С.В., Холопова Е.Н. «Невербальная коммуникация. Развивающие ролевые игры „Мафия「 и „Убийца「». Учебно-методическое пособие - Калининград: КВШ МВД России, 1998
- ^ a b c Gopnik, Adam (2006). "Fourth Thanksgiving: Propensities". Through the Children's Gate: A Home in New York. pp. 242–253. ISBN 9780676978278.
- ^ Berest, Pavlo (2006-03-08). "Intellectuals playing mafia games". http://www.kyivweekly.com/?art=1141859356. "Now the rules of the game are the intellectual property of Fedorov." The club has its own rules, see: "Club "Империя Мафии"". http://io.com.ua/www.php?w=http://mafia.kiev.ua.
- ^ Davis, Aaron (2006-08-04). "School officials still investigating 'Mafia'". Seacoast Media Group. http://archive.seacoastonline.com/news/rock/08042006/nhnews-r-ray-mafiafolo0804.html. "One parent, Nicole Hollenbeck told The Rockingham News in June, "My child has had sleepless nights, crying before bed because she's afraid that she'll sleep walk and relive the tragic events they talked about in class [...] We teach our kids right from wrong, and this is what they are being taught?"" . The Rockingham News story about investigation into the Mafia games at Iber Holmes Gove Middle School includes Davidoff's response: "I do understand the parents' concern, being a parent myself and having studied child psychology for 25 years. I want to reassure you that the positive message of the game would overcome any possible negative affects of an 'evil narrator.'"
- ^ Huston, David; Huston, John. "Do You Worship Cthulhu". Toy Vault. http://www.toyvault.com/cthulhugame/main.htm. Retrieved 2010-06-06. The main card art (based on H. P. Lovecraft's Cthulhu Mythos) was completed by Ron Spencer, and Walt Howington designed the instruction graphics.
- ^ Arneson, Erik. "Board and Card Games Timeline". http://boardgames.about.com/cs/gamehistories/a/timeline.htm. . About.com also includes Mafia in the "Top 5 Best Voting Games". The reason it is significant is given: "Werewolf / Mafia". http://boardgames.about.com/od/gamehistories/p/werewolf.htm. Retrieved 2007-11-25. "Werewolf is a favorite at game conventions and has been written about in several mainstream articles."
- ^ "Are You A Werewolf? Rules of Play". Looney Labs. http://www.wunderland.com/LooneyLabs/Werewolf/Rules.html. Retrieved 2010-06-15. "Night-Noise: When everyone closes their eyes at night, it is best for people to also start humming, tapping the table, patting a knee, or making some noise. This will cover up any sounds made accidentally by the werewolves, the seer, or the moderator"
- ^ The "Rules" at mafiacards.com describe a theme in which the "Mayor" runs the game.
- ^ Zhou, L.; Sung, Y. (2008). "Cues to Deception in Online Chinese Groups". Proceedings of the 41st Hawaii International Conference on System Sciences: 4. http://www.computer.org/plugins/dl/pdf/proceedings/hicss/2008/3075/00/30750146.pdf?template=1&loginState=1&userData=anonymous-IP%253A%253AAddress%253A%2B18.104.22.168%252C%2B%255B172.16.161.5%252C%2B22.214.171.124%252C%2B127.0.0.1%255D.
- ^ de Haan, H. W. (2004). "An abstract multi-agent framework applied to a social interaction game" (pdf). University of Groningen. Research Institute for Mathematics and Computing Science. p. 4. http://www.narcis.info/publication/RecordID/oai:ub.rug.nl:dbi%2F4922e1765fcb6.
- ^ "Graduate Mafia Brotherhood of Princeton Variant Rules". Fringe.davesource.com. http://fringe.davesource.com/Fringe/Entertainment/Games/Indoors/Mafia/v8.htm. Retrieved 2011-04-11.
- ^ a b For example, Bezier Games' Ultimate Werewolf Sorcerer has the ability to detect the "Seer" role. (The "sorcerer" is granted different powers in other rule-sets, like Princeton University's, in which the "Wizard" has the ability to detect the Seer.) Whatever name this role is known by, the "Detective-detector" is typically aligned with the Mafia (for example, see: "9 Player Werewolf "Evil" team". 2005. http://boredgamegeeks.blogspot.com/2005/09/9-player-werewolf.html. )
- ^ "Mafia (con)". http://www.puzzlers.org/dokuwiki/doku.php?id=gamerules:mafia. Retrieved 2007-12-20. "Knight Commandant / Sheriff – a townsperson who investigates mafia members"
- ^ As of November 2007, five card-based versions of this game are sold, and all require one player to becomes a "Seer". The "Do you worship Cthulhu Deck Setup". http://www.toyvault.com/cthulhugame/Cthulhu%20Game%20Instructions%20Front.jpg. specifies that a "Seer" card be dealt to someone even with the (minimum) five players. Similarly, the Lupus in Tabula "Preparation" calls for the "Seer" card to be dealt to somebody even if the game is played with the minimum number of players (eight). Getting Started with Ultimate Werewolf Role Selection advises that even the "introductory game" should include the Seer (with further optional roles being added in addition to the seer in later games). Werewolves of Millers hollow uses the "Fortune Teller" name for the "Detective" but the role is identical to the standard "seer"/"angel"/"detective", and is again mandatory, having its own phase of the night in the basic rules. (As does the Seer in Are You a Werewolf? - though it is after the werewolves' phase.)
- ^ For example, "The Mafia rules (MIT)". http://web.mit.edu/ceu/www/spielregeln_eng.html. are very simple, and specify roles for 7-20 players, always including at least one "Detective". Andrew Plotkin's original Werewolf always includes a "Villager (Seer)", and he mentions that in 1997 "Mafia" was played in the National Puzzlers' League convention with a "Knight Commandant". (The role of the "Knight Commandant" or "Knight" is described in detail as having the standard "Detective" powers in: "National Puzzlers' League -- 1997 Convention Reports". http://www.puzzlers.org/dokuwiki/doku.php?id=cons:1997:conreport1997. Retrieved 2007-11-24. ) Plotkin describes Davidoff's original game (which had no Detective) as "well off the current average". A rare modern rule-set with "No Inspector" is: Engstrom, Vegard (1999). "The Game Player Constellations". http://org.ntnu.no/mafia/. Retrieved 2010-06-15. but only when starting with five, larger groups get at least one inspector.
- ^ Cross, D. (June 2005). "Mafia Party THE SETUP". Vice Magazine. http://www.viceland.com/int/v12n5/htdocs/mafia.php.
- ^ For example, "Vigilante" in the "Princeton rules". http://fringe.davesource.com/Fringe/Entertainment/Games/Indoors/Mafia/v26.htm.
- ^ "Name: Naive Cop". http://www.sitesled.com/members/mikeburnfire/mafiascum04.swf. Retrieved 2007-12-16. "Description: A type of cop that always gets innocent results regardless of who they investigate"
- ^ For example, "The Oracle" in Werewolf chooses one person to investigate every night, and are shown their card, unless they pick the "Master Werewolf" – when the Oracle is shown an (innocent) villager card.
- ^ For example, as described on Ultimate Werewolf's Little Girl Card, and in the first non-introductory role suggested by Wired: The Child spies at night when the werewolves are killing, and only when the werewolves are killing, by opening her eyes ever so slightly
- ^ Depending on the variant, they may know the identities of the Mafia, but this isn't required; they usually indicate the player to protect in a separate phase of gameplay (a separate part of the night) than the Mafia's killing phase. The "Mafia-Doctor" is a mafioso, and a more obscure variant role, with the opposite power (from the Doctor) of protecting the guilty from attack during the day.
- ^ The protected player gains complete invulnerability during the night they are visited by the "Doctor" or "Bodyguard". The Mafia don't usually know the identity of the protected player, nor get a chance to select another victim, so this attack is wasted if the Mafia target a protected player (e.g., "Bodyguard, Lupus in Tabula". http://www.davincigames.it/download/LupusInTabula_rules.zip. Retrieved 2007-11-13. ).
- ^ a b c d e f "Characters from the New Moon expansion set". 2010. http://www.wired.co.uk/wired-magazine/archive/2010/03/werewolf/werewolf-extra-materials?page=3. Retrieved 2010-06-13.
- ^ For example, see the 2+2 rule-set describing the Nurse: "Mafia rules". http://forumserver.twoplustwo.com/showflat.php?Cat=0&Number=5547619&an=0&page=2.
- ^ "Various Mafia Roles: Third Party Roles: Arsonist & Firefighter". http://mikeburnfire.sitesled.com/mscumB.swf.
- ^ For example, the "Witch" in Werewolves of Miller's Hollow has only one use of her protective potion. She is allowed to see who was killed by the werewolves before applying the protective potion, so this character is more typical of the "reanimation" than the "protective" type.
- ^ "Do you worship Cthulu Roles and Quick Reference Script". http://www.toyvault.com/cthulhugame/Cthulhu%20Game%20Instructions%20Back.jpg. Retrieved 2007-11-21. . This makes the vigilante as lethal as the entire Mafia, potentially overbalancing the game, which has led to the introduction of roles that limit his effectiveness, such as the Walrus role-blocker.
- ^ The Hunter appears in Werewolves of Miller's Hollow, for example. The "Woodcutter" is a (less common) equivalent name for the role. Wired recommends including the hunter in even the most basic games: "Original Werewolf characters". January 2010. http://www.wired.co.uk/wired-magazine/archive/2010/03/werewolf/werewolf-extra-materials.aspx?page=2. Retrieved 2010-06-13.
- ^ The Godfather role is played differently between variants. If immunity to detection is the Godfather's only power, his leadership of the Mafia need only be nominal: "Name: Godfather". http://www.sitesled.com/members/mikeburnfire/mafiascum04.swf.
- ^ A typical Traitor-type role is the "Possessed" Special Character from "The LUPUS IN TABULA (2nd edition) rules". http://www.davincigames.it/download/LupusInTabula_rules.zip.
- ^ Fraade-Blanar, L. (2001-10-26). "Mafia game indulges fantasy, avoids jail term". The Johns Hopkins News-Letter. http://media.www.jhunewsletter.com/media/storage/paper932/news/2001/10/26/Focus/Mafia.Game.Indulges.Fantasy.Avoids.Jail.Term-2247440.shtml. "One person out of the circle finds themselves tapped twice, making them the stool pigeon. He must inform the townspeople, i.e. everyone who was not tapped, of the identity of the Mafia members while not being killed himself... The game shows a historical conflict between the accusers and the accused. It could well be the Europeans accusing witches"
- ^ The role is described as original to Albert Ziegler jr. in the Graduate Mafia Brotherhood of Princeton Variant Rules. This role requires that other variations be in play to give alternative explanations for a failed day-time lynching. The name for the mafioso-to-innocent role is usually "Saul".
- ^ The thief's action usually applies for a single night, as in: "Mafia Game: IRC Version". http://users.wpi.edu/~tachase/mafiairc.html. . The thief sometimes has a purely investigative function - being only able to determine the roles from stolen items."Thief". http://www.sitesled.com/members/mikeburnfire/mafiascum04.swf.
- ^ Bennet, J.. "Mafia: Advanced rules" (PDF). http://7-0-7.co.uk/Miscellaneous/MafiaRules.pdf. In other variants, the mafia can't kill anyone else on the night this power is used. The potential existence of a Yakuza makes innocents with protective roles less inclined to reveal their roles for fear of being converted (or more inclined to reveal themselves if they expect the Mafia to win and wish to be converted).
- ^ a b c "Characters". January 2010. http://www.wired.co.uk/wired-magazine/archive/2010/03/werewolf/werewolf-extra-materials.aspx?page=2. Retrieved 2010-06-13.
- ^ The Psychiatrist can 'cure' the Serial Killer according to the Pub Game rules: "Serial Killer". http://www.dslreports.com/faq/15594. . When 'the psychiatrist' is in play, the Serial Killer may be "The Psychopath", as in: "Name: Pyschiatrist (Various Mafia Roles: Third Party at MafiaScum.net)". http://www.sitesled.com/members/mikeburnfire/mafiascum04.swf.
- ^ For example, Ultimate Werewolf Masons recognize one another from the first night.
- ^ Spadaccini, S. (September 2005). The Big Book of Rules. Plume. ISBN 9780452286443.
- ^ As in the Mafia Games setup described by group-games.com, requiring only mafiosi, police, a doctor, and the townspeople. Or, a simple version using only citizens, mafia, and detectives, as described in: Toone, M. (July 2009). Great Games!. MVT Games. p. 41. ISBN 9780979834554. "The detectives now guess who they think might be one of the Mafia -no talking allowed, they simply point to one person."
- ^ The Cupid card in Bezier Game's Ultimate Werewolf, for example.
- ^ "Wired Magazine Issue Selected articles from 03.10 > Werewolf > Werewolf: Extra Materials". http://www.wired.co.uk/wired-magazine/archive/2010/03/werewolf/werewolf-extra-materials.aspx?page=2. Retrieved 2010-06-13. "Optional rule: if the Lovers die and Cupid is still alive, Cupid chooses a new set of lovers."
- ^ Alternatively, they may have a vote, but be mandated to always vote against lynching, as is the Village Ethicist
- ^ a b "Werewolf: Extra Materials". 2010-01-29. http://www.wired.co.uk/wired-magazine/archive/2010/03/werewolf/werewolf-extra-materials?page=all.
- ^ "Character references". 2010-01-29. http://www.wired.co.uk/wired-magazine/archive/2010/03/werewolf/werewolf-extra-materials?page=6. Retrieved 2010-06-14.
- ^ "Mafia variant: President". http://www.mafiaspiel.de/. described by MafiaSpiel.de, for example.
- ^ A role introduced in Ted Alspach's 2010 Ultimate Werewolf: Classic Movie Monsters.
- ^ "Common Mafia Roles". http://www.smogon.com/smog/issue5/mafia_roles. Retrieved 2010-06-14. —The Silencer is typically aligned with them and knows their identities, but (in some variants) in unknown to them, not participating in mafia killings.
- ^ The Priest alone knows whether the dead were innocent in the World Boardgaming Championships game described by Bruno Wolff in "Werewolf rules". https://wolff.to/bruno/werewolf.html. Retrieved 2007-11-19.
- ^ The Medium function varies, for example see summarized 'Medium-enabled seance' rules from Werewolf at: "boredgamegeeks". http://boredgamegeeks.blogspot.com/2005/09/9-player-werewolf.html. Retrieved 2007-11-14. , as opposed to the Lupus in Tabula Medium, who alone can uncover the alignment of the deceased (see: "Lupus in Tabula (English rules) Special Characters". http://www.davincigames.com/page.cfm?sez=01&gioco=lit. ).
- ^ The "Witch" was introduced as a special character in The Werewolves of Millers Hollow, where she also has a single-use killing potion. She may be able to revive herself with the reanimation potion, see: Original Werewolf characters
- ^ The "bulletproof" effect typically applies to night-time killings and is usually temporary, for example, the Ultimate Werewolf "Amulet of Protection" (bulletproof vest equivalent) protects over only a single night. Rare optional roles do give permanent protection from "mafia" attack, such as the Lupus in Tabula Werehamster
- ^ For example see the lengthy variant role list at "MafiaWiki The roles". http://en.wiki.mafia.sebi.name/The_roles.
- ^ All of the commercial variants ship with blank cards to allow this customization. For example see: Lupus in Tabula ("Werewolves at the Table") card listings.
- ^ a b Toone, M. (July 2009). Great Games!: 175 Games & Activities for Families, Groups & Children. MVT Games. p. 42. ISBN 9780979834554.
- ^ "The Original Mafia Rules". 1999. Archived from the original on 1999-03-02. http://web.archive.org/web/19990302082118/http://members.theglobe.com/mafia_rules/. Retrieved 2010-06-15. "Accusations may happen any number of times during the discussion...once in a while, someone should propose to have a "Mafia Night". If the majority of the players who are still in the game agrees, the Night begins."
- ^ a b Braverman, M.; Etesami, O.; Mossel, E. (2008). "Mafia: A Theoretical Study of Players and Coalitions in a Partial Information Environment". The Annals of Applied Probability 18 (2). http://projecteuclid.org/DPubS?verb=Display&version=1.0&service=UI&handle=euclid.aoap/1211819786&page=record.
- ^ The random resolution is typical in academic models of Mafia. For example see: Yao, E. (2008). "A Theoretical Study of Mafia Games". arXiv:0804.0071 [math.PR].
- ^ a b That a single mafioso wins against a single surviving innocent in the day phase is a standard live-play rule, being a sub-case of the rule that a numerical equality is a Mafia victory
- ^ The 'separate waking' method of designating victims is used in the official "Mayday". http://www.interactivitiesink.com/minigames/mayday. rules, for example. (This is a Soviet Union-themed variant with other expanded rules, released under Creative Commons licensing.)
- ^ "Mafia and Werewolves". http://fringe.davesource.com/Fringe/Entertainment/Games/Indoors/Mafia/v18.htm. "Note - This variant was performed with great success on November 12, 1998" —From the old Princeton variant rules.
- ^ 7-0-7, Jon Bennett "Mafia Advanced Rules". http://7-0-7.co.uk/Miscellaneous/MafiaRules.pdf. Additional rules created by Jon Bennett, accepted in local Mafia circles.
- ^ "CISRA Puzzle Competition - Quantum Werewolf". Puzzle.cisra.com.au. 2008. http://puzzle.cisra.com.au/2008/quantumwerewolf.html. Retrieved 2009-06-16.
- ^ "Train Mafia". Copenhagen Game Collective. 2009-09-27. http://www.copenhagengamecollective.org/train-mafia/. Retrieved 2011-04-11.
- ^ "Werewolf! on Richard's PBeM Server". Gamerz.net. http://www.gamerz.net/pbmserv/werewolf.html. Retrieved 2009-06-16.
- ^ For example: Plotkin, A.. "Werewolf Statistics". http://www.eblong.com/zarf/werewolf-stats.html. "If we figure that 9 or 11 players is ideal for a two-wolf game, and we assume that these probabilities actually means anything (heh heh), then an ideal game has a human-win chance of 0.23 to 0.29. (Again, for completely stupid humans.)"
- ^ For example, 9,700 innocents have almost no chance to survive 300 mafiosi - see: Braverman, M.; Etesami, O.; Mossel, E. (2008). "Mafia: A Theoretical Study of Players and Coalitions in a Partial Information Environment". The Annals of Applied Probability 18 (3): 20. arXiv:math/0609534.
- ^ The single detective publishes a large list of innocents, and asks to be lynched to guarantee its veracity (under the standard rules in which the detective's role is revealed after she is killed, no strategic interference from the Mafia is possible): Braverman, M.; Etesami, O.; Mossel, E. (2008). "Mafia: A Theoretical Study of Players and Coalitions in a Partial Information Environment". The Annals of Applied Probability 18 (3): 12. arXiv:math/0609534.
- ^ Derivation is by recursion on decreasing numbers of players in the following round, see: Yao, E.. "A Theoretical Study of Mafia Games" (pdf). p. 7. http://cdsweb.cern.ch/record/1096965/?ln=fr.
- ^ Batcheller, Archer L.; Hilligoss, Brian; Nam, Kevin; Rader, Emilee; Rey-Babarro, Marta; Zhou, Xiaomu (2007 table of contents). "Testing the technology: playing games with video conferencing Conference on Human Factors in Computing Systems". Proceedings of the SIGCHI conference on Human factors in computing systems: 849. doi:10.1145/1240624.1240751. ISBN 9781595935939.
- ^ a b McCarthy, C (2009-04-24). "Why do young techies want to be werewolves?". CNET News. http://news.cnet.com/8301-13577_3-10225896-36.html.
- ^ Cross, D. (June 2005). "Mafia Party EXTRA TIPS". Vice Magazine. http://www.viceland.com/int/v12n5/htdocs/mafia.php.
- ^ Gopnik, Adam (2006). Through the Children's Gate: A Home in New York. p. 245. ISBN 9780676978278. "the emotional authenticity of the alliances, the felt pleasure of trusting another, is startlingly, frighteningly real. You and George against the Mafia— but then the quick nightly shadow intrudes: What if George is the Mafia? Yet the proper suspicions, though they rise, rarely override these instant bonds."
- ^ Salen, K; Zimmerman, E. (October 2003). Rules of play: game design fundamentals (illustrated ed.). MIT Press. pp. 468–469. ISBN 978-0262240451.
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