Well since I wrote it already, might as well post it here too =p.
Haha since everyone likes to play it, I figured I'll create a post on how to play this game =D. Btw interesting fact, werewolf is also known as mafia and was originally created in 1986 in Soviet Russia. Since then, it has become a party game with worldwide fame, with many variations springing forth from it.
There are two factions in this game. The werewolves and the villagers. The werewolves know the identities of one another but the villagers do not. Both of these factions live in the same village and the goal of the game is for one faction to kill off their other. The werewolves typically form around 1/4 of the number of players, though this changes with the abilities of the villagers.
This game is best played with cards to indicate roles of each individual. In the absence of cards, the game master has to manually choose individuals to get their roles by having everyone close their eyes and announcing that he is tapping the werewolf etc, which can be a very troublesome process. Otherwise, at the beginning of the game, each person will be given one card which will indicate his role in the game.
After everyone knows their roles, night falls and all players close their eyes. The game master will call different roles to wake up at various points in the night and these characters will use their abilities. Not all roles will wake up in the night as their roles may be active at other times. After the game master has gone through all the roles, it will be morning and the events that occurred in the night will be announced to the village. This will be followed by a village council session where everyone in the village, including the werewolves who will be trying to push blame to other people, will accuse one person of being the werewolf and have him executed. =
Villagers are not allowed to announce their roles to anyone else, and this includes people with investigative roles who have found out the identities of the werewolves. Players who have died may stay awake in the night and observe what happens, but may not speak to the other players lest they give hints on the identity of the players who are still alive.
The game ends when all the werewolves are dead or when the villagers have no hope in surviving against the werewolves any longer.
Some of the more common and easy to execute roles will be explained here
Werewolf - The werewolves are the enemy faction of the game. The werewolves wake up collectively every night to hunt. A villager will be targeted in the night and killed from the werewolves attack. The werewolves generally should always attempt to target those that are suspected of holding powerful roles or those that will most likely not be voted off in the day anyway.
Priest - The priest blesses someone every night. Depending on the number of players, the priest may bless an area instead of just one specific person. The people who are blessed cannot be killed during the night. The priest cannot bless himself/herself. An additional rule can be made where the priest cannot bless the same person two nights in a row.
Witch - The witch has two types of spells. A poison spell and a healing spell. The supply of these spells vary depending on the number of players, though typically there is only one healing spell. The witch can only use one spell per night. The healing spell prevents the target who was attacked by the werewolves from being killed that night. However, the witch does not know who he/she has healed. Death by any other forms cannot be healed by the witch. The poison spell targets a specific person who the witch believes to be the werewolf and the person will be killed.
Hunter - The hunter does not wake up during the night. Instead, the hunter's ability is activated upon death. When the hunter has been killed, he/she can take someone else down. Usually in larger games, there are multiple hunters in the game, potentially creating killing chains.
Cupid - The cupid is the first person to wake up on the first night and becomes like a normal villager afterwards. The cupid will bind the fates of two people together, such that when one dies, the other person will also die. Death by the cupid's bind overrides all other protective abilities such as the priest's blessings.
Fortune Teller - The fortune teller can find out the identity of one person every night. With cards, this is usually done by the game master showing the card of the chosen target to the fortune teller. The person who's identity has been revealed will not know it. The fortune teller is an investigative role and cannot be in play with any other investigative role at the same time.
Little Girl - The little girl has the ability to peep during the time where the werewolves are awake. This allows her to find out the identity of all the werewolves. However if detected by the werewolves, the little girl will most likely be killed by them due to her game breaking abilities. The little girl is an investigative role and cannot be in play with any other investigation role at the same time.
Shaman - The shaman chooses three people every night and the game master will tell the shaman if there is at least one werewolf in their midst. The number of werewolves will not be revealed. The ability to choose three people makes the shaman a superior version of the fortune teller, although the specific identities of villagers are not revealed. As such, the shaman is typically played only in larger groups. The shaman is an investigative role and cannot be in play with any other investigation role at the same time.
Vigilante - The vigilante protects the townfolks with his/her gun by shooting someone who he/she believes to be the werewolf in the night. After a shot, the vigilante may not shoot the following night. The vigilante has to be careful with his/her targets to prevent shooting an innocent villager.
Governor - The governor has day time powers during a vote. The governor's ability may seem to be minute but it can be game breaking if the governor survives until nearing the end of the game and if protective roles are still alive. After a council vote has been finalised, the governor can choose to reveal himself/herself as the governor and veto the vote, even if it was directed against himself/herself. This saves the person who would have been voted out as well as reveals the governor to all players, hence allowing everyone to know that the player is an innocent. However, the werewolves will also likely try to kill off the governor as the presence of the governor means that one obvious innocent will be alive and this is disadvantageous to them in the council.
Silencer - The silencer has a high priority in the night, having him/her to wake up before the other roles do. The silencer will then target one person who will be unable to wake up that night to use his/her abilities. As such, the silencer is a double edge sword as the silencer may likely end up silencing someone important. However, when the witch does not cast any spell in the night, the silencer may then guess that the witch had been silenced and hence guess the identity accordingly. Additionally, the silencer may silence the werewolf on the first night, and thus one less werewolf wakes up. Since the werewolves do not yet know each other's identity, the werewolf may accidental hunt a fellow werewolf. Finally, the silencer is most powerful when only one werewolf is left in the game, for if the werewolf is silenced, there will be no hunting in the night and the silencer will know immediately who the werewolf is.
The Union - The union are a group of villagers who wake up once at the beginning of the game and take note of each other's identity. For the rest of the game, the union knows that each other are innocent and during the day vote will work towards protecting one another from being voted off.
Baker - The baker gives a loaf of bread to someone every night, revealing to that person that he is the baker. As such, as the game goes on, more people will know the identity of the baker. However, the baker may end up giving the loaf of bread to a werewolf and as a result is hunted by the werewolves. When the baker dies, the villagers have three days to kill the werewolves or they die of hunger. If the baker is in play, the priest must not be able to bless the same person continually.