The game is played in rounds with each round broken up into daytime and night-time. These rounds will continue until the game ends which happens when either the villagers eradicate all the werewolves or the village has an equal number of werewolves to villagers.
Your goal will depend on your character role, but you must to act out the role you have been assigned and help your team win.
Depending on the amount of players, the list of characters in game will vary. The basic list involves two teams fighting for survival.
The longer list introduces more uncertanty as more sinister characters are introduced...