90 Ball versus 75 Ball

There are two types of bingo played around the world. North America plays 75-ball bingo on a 5x5 card with the center square usually marked 'free'. In the UK, parts of Europe, Australia and parts of South America they play a 90-ball game, marked on a 9x3 card. Both types of bingo are available online .

The desired pattern which players aim to achieve in 75 ball can vary dramatically, from a simple single line to more complicated themed patterns. The aim of the game, however, is always the same: to mark off the numbers to achieve the desired pattern. Speed Bingo is a variation played exactly the same, but numbers are simply called much quicker.

In 90-ball bingo, each card has three horizontal lines and nine columns. Each line contains five numbers, meaning each card has 15 numbers. The first column contains numbers from 1-10, the second column contains numbers from 11-20, the third column contains numbers from 21-30, all the way through to the final column which contains numbers from 81-90.

A game of 90 ball bingo will normally be played in three stages: one line, two lines and Full House. In a "one line" game players need to mark a complete horizontal line across one card (i.e., 5 numbers marked). The aim of a 'two lines' game is to complete any two marked lines horizontally across one card (i.e., 10 numbers marked). Finally a "Full House" means all the numbers marked off on one card (all 15 numbers), as in a regular coverall game. The prize split differs for each stage of the game. The Full House is always the largest prize in any one game.

Source: http://en.wikipedia.org/wiki/Online_bingo