Keno is a lottery-like gambling game often played at modern casinos, and is also offered as a game in some state lotteries. A traditional live casino keno game uses a circular glass enclosure called a “bubble” containing 80 balls which determine the ball draw result. Each ball is imprinted with a number 1 through 80. During the ball draw, a blower pushes air into the bubble and mixes the balls. A “caller” presses a lever opening a tube, where 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 “S” over the “spot” choices on a blank keno ticket form with 80 numbered selection boxes (1 to 80). After all players successfully place their wagers, the casino draws 20 balls (numbers) at random. Some casinos automatically call the ball draw at preset timed intervals regardless of whether or not players are waiting to place a wager.
Each casino sets its own series of pay scale choices called “paytables”. 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. Players will find a wide variation of keno paytables from casino to casino and a large deviation in the house edge set for each of those paytables. Additionally, each casino typically offers many different paytables and specialty keno bets for customers to choose from, each with its own unique house edge. No two casinos’ keno paytables are identical. There are several Reno and Las Vegas casinos offering as many as 20 or 30 different paytables from which the player can choose.
Keno is similar to Lotto. It was first introduced in China many years ago. The game was brought to the USA in the mid 1800’s by the Chinese immigrants who came to work in the mines and on the railroad. It is a very popular game and very easy to play. It is an exciting pastime and, most importantly, it offers the possibility of winning large payouts on relatively small wagers.
Keno is usually played in Casino lounges specifically allocated for the game, but there are so called ‘Keno runners’ who will collect your ticket and deliver the winnings if the player wants to play from outside the lounge area. There are many television monitors spread all over the Casino halls to keep players informed of the winning numbers.
There is also the video version of Keno. These are slots-like coin operated machines. It plays using the same principle with similar rules of the regular Keno, but you get the results much faster.
To play Keno, you select a minimum of 4 but no more than 10 numbers between 1 and 80. Each selection is called a ‘Spot’, so if you select 10 numbers you are playing a 10 Spot game.
Keno tickets are located at tables throughout the Casino and in the Casino’s Keno lounge. The Casino provides a ‘Keno crayon’ for this purpose.
Simply mark a blank Keno ticket with the numbers of your selection. Then present your ticket to the Keno desk with your wager and the clerk will give you a duplicate ticket. In a few minutes, twenty numbered Keno balls will be drawn at random from a barrel containing 80 numbered balls, and if enough of your selected numbers are drawn, you are a winner. The results are displayed on screens, called Keno boards, throughout the Casino.
Minimum bets can be as low as 5 cents, although some Casinos only accept bets of $1 or more. The house’s Keno brochures give you information about payoffs and various tickets you can play.
The amount of money you win is dependent upon the type of ticket you play and the number of ‘spots’ caught. You may play as many tickets as you wish. You could win as much as $50,000 on a $1 wager in some Casinos.
The round of a Keno game is called a Keno race. In many Casinos, ‘multi-race’ Keno is featured, where you can play a number of consecutive Keno races at one time.
The house advantage on Keno varies according to the Keno game played. It is always around 30% or more. The chances of hitting one number in 80 is 0.25%, making Keno among the worst bets you can make.
