You may buy the full set of 6 or in part, a popular choice is to play 4. What you buy depends on the number you feel most comfortable with, and of course what your pocket dictates. Be sure to mark the number clearly. The Caller calls these games at a slower pace so that no one is disadvantaged. Each game begins when the Caller announces the colour of the next game, and whether it is to be a Line Game or a Full House.
Some Callers have their own preferred words to announce the start of play.
If you are too slow yelling Bingo the next number may be lucky for somebody else, and if both yours and theirs are correct you have to share the win. Each game takes approximately 3 minutes to play. Your numbers will be checked against the callers screen before your win is paid. Prompt yelling prevents the next number being drawn, if you are too slow you may have to share the win with the winner of the next number called. Bingo boards are also available.