If you'd rather not download the casino software to your hard disk, you don't have to. You circle them in two groups of three. At the bottom of the article, feel free to list any sources that support your changes, so that we can fully understand their context.william hill tote direct IS ONLINE ROULETTE SAFE Keno /kiːnoʊ/ is a lottery-like gambling game often played at modern casinos, and also offered as a game in some lotteries. A set of keno betting slips. There's another way that it's like the state lottery: the odds are very bad. Keno in the casino has the highest edge of any game in the casino -- 25% or more. Keno, gambling game played with cards (tickets) bearing numbers in squares, usually from 1 to Keno is of Chinese origin and of great antiquity, dating back at least 2, years. The original Chinese name for the game is baige piao or pai-ko p’iao, meaning “white pigeon.