It is a group game played by three or more people.
The game involves a group of people who know the topic, and a single person from the group does not know what the topic is, and he must guess the topic through questions conducted among all the players.
All other players must guess who is the person who does not know the topic by asking others
Not everyone knows who the off topic person is
Not everyone knows the people involved
At the end, there is a vote and some points are scored