Andar Bahar is a traditional Indian card game that is popular in both India and some parts of Southeast Asia. It is also known as "Katti" or "Mangatha" in some regions. The game involves a dealer placing a card face up in the center of the table, and players placing bets on whether a card of the same value will appear on either the "Andar" (inside) or "Bahar" (outside) sides of the center card.