Bingo is a popular game that is played around the world, although the origin is unknown it is mostly played in the United Kingdom, Australia and New Zealand. In the game of Bingo players mark off numbers on a ticket as they are called out in order to achieve a winning combination.
The game is presided over by a caller, whose job it is to call out numbers and validate winning tickets, he will announce the prize or prizes for each game before starting.
Once the game begins, the caller will call out numbers as they are randomly selected, either by an electronic Random Number Generator, by drawing counters from a bag or by using balls in a mechanical draw machine. Calling takes the format of a simple repetition in the framework, "both the fives, fifty five" or "two and three, twenty three".
When players first come to the venue they can buy a book of tickets. In UK bingo clubs, playing is divided into sessions with different books, each with a designated number of pages. Players in the UK usually prefer to buy books of six tickets containing all possible numbers in different combinations.
As each number is called, players check to see if that number appears on their tickets. If it does, they mark it with a special marker called a "dabber" or a "dauber". When all the numbers required to win a prize have been marked off, the player calls out "line" or "house" depending on the prize and an official will check the claim.
In the UK with the increasing computerization of bingo systems, an Auto-Validate system is often used in large clubs where a 1 to 8 digit security code is read out by a member of staff and checked against the entry for that ticket on the system. This saves the club from the time-consuming exercise of reading out every number on the ticket.
There will often be an interval halfway through the game, in UK bingo halls it is most common for Mechanised Cash Bingo to be played.