Poker is one on the most popular casino games in the world.

There are several variations of the original poker game. Some of the variations include 5 card draw, 5 card stud, 7 card draw, 7 card stud, Texas holdem and deuces wild. Poker is relatively easy to learn which may explain why it's so popular. At least two people are required to play a game of poker. For Internet casinos, the second person is the computer, or dealer.