Bingo card cards to overcome the difficulty with randomization. There are two types of Bingo cards. One is a 5x5 grid meant for 75-ball Bingo, which is largely played in the U.S. The other uses a 9x3 grid for U.K. style "Housie" or 90-ball Bingo. Players use cards that feature five columns of five squares each, with every square containing a number (except the middle square, which is designated a "FREE" space). The columns are labeled "B" (numbers 1–15), "I" (numbers 16–30), "N" (numbers 31–45), "G" (numbers 46–60), and "O" (numbers 61–75). A popular Bingo myth claims that U.S. Bingo innovator Edwin
Bingo (U.S.) separately from the main game package. Players typically only play one or two cards and the numbers are called as quickly as the bingo balls come out. A game where numbers are pre-drawn and players purchase sealed bingo cards which are then matched against the pre-drawn numbers. If a specified pattern is achieved, then the player usually wins a prize according to a prize table. Some versions are played until a player achieves a top level prize and then new numbers are drawn and the game begins anew. This type of bingo may be played over days, weeks or months