National Bingo Night (U.S. game show) of the studio audience attempted to win a game of bingo while competing with a solo studio contestant. For "Bingo America", it is played as a straight general knowledge quiz format with two players and a home viewer bingo game within. Home viewers play along with pre-printed game cards that are available from the network website just before each episode airs, and are also eligible to win prizes. The show was expected to return for a five-episode run during the week of December 17, 2007, but on November 13, 2007, ABC decided to replace it instead with its new game
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