Online Poker machines are usually set up so that payments are made only from certain card combination. Each machine has its own rules when it comes to the possibilities, probabilities and profits. Following video poker games are the most popular:

Ten or better: Every win ten pairs or all the higher card combinations.
Jacks or better: This is the most common video poker variant. A pair of Jacks or higher all card combinations to win.
Deuces Wild: In this video poker game that is considered to be two wild card (joker).
Joker Poker: This version of video poker allows two jokers that can in addition to the creation of the card combination can be used.