» Keno Rules

Keno is played at modern casinos, it is a lottery-like or bingo-like gambling game. A circular glass enclosure called a "bubble" containing 80 ping pong-like balls which determine the balldraw result is used in the game of keno. There are numbers from 1 to 80 on each keno ball. The balls are mixed by a blower when it pushes air into the bubble. A lever opening a tube is pressed by a "caller" and then the balls lift one at a time into a "V" shaped tube called the "rabbit ears". The caller and a "verifier" record each of 20 balls drawn, and the computerized keno system calculates all wagers based on the numbers drawn.
Players wager by marking an "X" over the "spot" choices on a blank keno ticket form with 80 numbered selection boxes (1 to 80). After that you can place your wagers and then the casino draws 20 balls (numbers) at random.
The series of pay scale choices called "paytables" are set by each casino. The player is paid based on how many numbers drawn match the numbers selected on the ticket and according to the paytable selected with regard to the wager amount. There is a wide range of keno paytables from casino to casino and a large deviation in the house edge set for each of those paytables. One can hardly find two absolutely identical keno paytables.
Usually the house edge is from less than 4% to 66%.