Eight friends around a table, phones face up. You deal a round. Seven of them see "Musical instruments" and the word "saxophone". One of them sees only the category. None of them know who got what.
You go round the table asking for one clue each, no saying the word. Someone says "jazz". Someone says "brass". The Mole, panicking but quick, says "smoky club". Everyone laughs. Suspicion moves. Someone says "that was too vague".
Then everyone votes from their phone and you watch the tally before you reveal anything. Catch the Mole and the voters bank points. Slip past the room and the Mole banks them instead. Next round, new word, new Mole, and now nobody trusts anybody.