Play one scorecard (or more) of 25 squares, with random numbers. Each time a number is announced, daub it on your scorecard/s. The winner is the player who reaches either 5 consecutive numbered daubed, or the entire scorecard. The winner shouts 'Bingo' and has their scorecard checked.
When a player has a BINGO (5 in a row, column, or diagonal), he or she calls out BINGO. The game pauses while the card is verified. If indeed a winner, the game stops and a new game begins.