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In the State of Nevada many Las Vegas casinos have introduced their own keno games. The odds of winning are about the same as in traditional keno games, except a keno player may select from a very large number of so called "special" games. These games are often changed and revised to introduce an element of newness and excitement, yet basic principles always remain the same – the house always has a tremendous advantage over the player.

Lottery versions of Keno are now used in many National Lotteries or state licensed Lotteries around the world. The games have different formulas depending on the wanted price structure and whether the online casino game is slow (daily or weekly), or if it is a fast game with just minutes between the draws.

The drawn numbers are typically published on TV for the slow games and on monitors at the point of sale for the fast casino games. A video keno machine typically has a far greater payout and win-rate than a traditional keno game.

As the winning numbers light up, the player usually marks them on his or her card with a bright-colored marker. A winning ticket needs to be taken to the keno booth immediately if it is an individual online casinos game ticket, as drawings usually take place every five minutes.