01
Pass the phone
Everyone takes the device in turn and sees their role in private. Most players get the secret word. One — or a few — get nothing but the word 'traitor'.
One device, one room, one traitor. Pass the phone, say your piece and work out who is lying — no account, no internet, no setup.

Everybody at the table shares one secret word — except the traitor, who has to bluff their way through a round of it without ever hearing what it is.
01
Everyone takes the device in turn and sees their role in private. Most players get the secret word. One — or a few — get nothing but the word 'traitor'.
02
Each player says one thing about the word. Say too little and you look suspicious. Say too much and you hand the traitor exactly what they need.
03
The table votes. The traitor wins by surviving the vote — or by naming the secret word out loud before the round closes.