Keno was introduced to the casinos in the early twentieth century.
Originally 80 numbers were written on pieces of paper and rolled up into tubes.
Casino Keno is still played today by drawing numbered balls from a rotating cage. In 1963 the cumulative payout of a Keno game was limited to USD25,000, by 1979 it had increased to USD50,000.
Nowadays, each Keno casino chooses its own limits.
Computers have helped to make the game of Keno more efficient and quicker to play. There are many casinos now that operate computer-controlled Keno cages.
