Social deduction game
A social deduction game is a game in which players are secretly assigned roles on opposing teams and must work out who is who through conversation, observation and voting.
Typically a small group of players know they are the hidden minority and try to blend in, while the larger group has to find them without knowing whom to trust. There are few cards to compare and no dice to roll. The game lives in what people say and how they say it, which makes it noisy, funny and good for groups that like to argue.
Well-known examples include Werewolf and Mafia, the classic spoken versions, The Resistance on the tabletop, and Among Us on screens. Common ingredients are a hidden traitor, a voting step that eliminates someone, and special roles that give one player a clue.
The format is a staple of game night because it scales well and needs no box. A phone or browser game can deal the roles in secret, so nobody has to be the narrator. Games with elimination can leave players watching, so the good ones keep rounds short.