The basic rule of video poker is to discard the cards that will give each particular hand the highest possible expected return. The rules and the payout table will affect which discard decisions are correct for each hand.
There are 32 different ways you can play each hand, but usually, there is only one optimal strategy for a particular hand.
The best video poker strategy balance potential profits from every hand with the probability of winning any particular hand. The number of variations of video poker is constantly increasing.
Wild cards have been introduced, some games feature multiple decks, bonuses for certain four kinds are common, and payoff tables can vary from one machine to another.
To have an edge the player must play correct or near-correct strategy appropriate to their game and payoff table.