"Andar Bahar" is a popular card game played for money in India. It involves a single deck of cards and two betting positions, "Andar" (inside) and "Bahar" (outside). A card is drawn from the deck, and players bet on whether the next card of the same rank will appear on the "Andar" or "Bahar" side. It's a fast-paced game of chance where players wager on the outcome, making it both exciting and unpredictable.