Every card carries a fact but never says which camp it belongs to — that is the whole game. Play a card, declare its camp out loud, and hope nobody calls you. You are up against two opponents who bluff, and who are watching you.
Five cards each. Stuck? Dig — draw one at a time, up to three, and play the first one you can use. Just played? Chain its twin — a second card from the same camp and the same issue — and shed two in one turn.