This game is based on a Japanese comedy game series 人狼〜嘘つきは誰だ?〜.
There are 17 types of roles.
And if you are the werewolf you would have to get rid of the humans until you have the same number of werewolves as the humans do. And humans are to get rid of the werewolves.
However, there is a third force, the fox. The fox wins if he lives on till the end of the game.

The 17 types are namely:
Staple Characters:
Villager 市民 - No Effects
Werewolf 人狼 - Kill someone during the night (werewolf will know who the other werewolf is)
Knight 騎士 - Protect one person from attack by werewolf except himself in the night
Fortune Teller 占い師 - During the night you can see who is a werewolf, a villager or fox (however, you are unable to see their profession, or if the person was cursed)
Betrayer 裏切り者 - Part werewolf team and part villager team, can sway both ways.

Additional Characters:
The Twins 双子 - Can know who your twin is and confirm that he/she is a villager
The Medium 霊媒師 - Able to see the person who was voted off in the morning trial if the person was a werewolf or not
Apprentice Knight なりきり騎士 - similar power as the knight, but you die in the process
The Infected 感染者 - becomes a werewolf when attacked
Pied Piper Pierot 道連れピエロ - able to select someone else to die with him when selected by the werewolf as an attack target or when voted off
The Cursed 呪われし者 - a villager but when seen by the fortune teller or medium, he becomes the bait for the night
The Weak 病弱 - Become the designated person to die from the werewolf attack on the night = number of werewolves+1 from the start of the game
The calm senate 冷徹な議長 - able to void other peoples votes and count only his in 1 of the trials. Once per game
Thick Haired Laborer 毛深き労働者 - Shows up as a werewolf, but actually is a villager
Sturdy Sailor 屈強な船乗り - when attacked by the werewolf, he dies on the second night
Disciple of the Fortune Teller 占い師の弟子 - Becomes a fortune teller when the fortune teller dies
Assassin 暗殺者- select a person to assassinate in the night, the effects of knight or apprentice knight is voided
Demonic Magic User 妖術師 - Able to fortune tell someone and show it to the werewolves. However, he becomes the attacked person in the night. Villager Team
Targeted Villager 狙われる市民 - Start out as a villager team, but turns to a werewolf when attacked
Werewolf Child 人狼の子 - Startout as a villager but after =number of werewolves at the start of the game + 1 night, turns into a werewolf
Fox Demon 狐憑き - your goal is to just survive and you win
Witch Doctor闇医者

Games