At most casinos, you must claim your winnings on an individual game before the next game begins. Usually you have about five minutes between the end of one game and the beginning of the next. If you don't turn your winning ticket in on time, you forfeit any winnings you might have had.

Because many casino patrons don't want to spend their time standing in line for individual keno race tickets, most casinos offer multirace tickets. You have to play the same numbers for a series of consecutive games, usually between two and twenty races, and usually you can't claim any winnings until the last race in your series is finished. You also pay at least the minimum for each race. On a $1 game, you'll pay $20 for a twenty-race ticket; on a $5 game, you'll pay $100 for a twenty-race ticket. As with the individual games, you may have to claim your winnings immediately after the last race in your series ends. Check with keno personnel to find out what the casino's policy is.

Most casinos also offer something called “walk away keno,” “play and stray keno,” or “keno to go.” With this option, you play the same numbers on twenty-one games or more — up to as many as 999 games — and you usually have up to a year to claim any winnings. So, for example, you could go to the casino in March, buy a ticket for fifty keno races, go home, return to the casino at Thanksgiving, then turn in your ticket at the keno counter and collect any winnings you might have earned from the March races. Check with keno personnel for your casino's rules on this option.