Bingo (United Kingdom) also allowed bingo halls to focus on the more lucrative business of bingo. The National Bingo Game is a bingo game operated by the National Bingo Game Association since 1986 and played in some British bingo clubs. The largest National Bingo Game operator in the UK is Mecca Bingo with approximately 97 clubs participating in the game. Gala Bingo withdrew from the National Bingo Game in 2008 and created their own version of the game, known as the High 5 game. The game was played immediately before the second half of each Main Event, the same time as when they
Bingo card culture. Larger patterns, e.g. a diamond pattern consisting of cell positions B3, I2 and I4, N1 and N5, G2 and G4, and O3, are often used by online Bingo games to permit large number of players while ensuring only one player can win. (A unique winner is further desirable for online play where network delays and other communication interference can unfairly affect multiple winning cards. The winner would be determined by the first person to click the "Bingo!" button (emulating the shout of "Bingo!" during a live game).) In this case the number of unique winning cards is calculated as