In fact, when Missouri riverboats opened under a law that forbade games of chance, casinos were allowed to offer video poker, as a game of skill, even though slots, as games of chance, had to wait until voters changed the law. And because cards are required to be dealt from a randomly shuffled 52-card deck - or 53 cards, in the case of Joker's Wild machines - the possible combinations are known, the frequency of the combinations can be calculated, and an optimal playing strategy can be devised. Players have decisions to make that affect the outcome. But video poker adds something slot machines don't have - an element of skill.
