Casino Poker Game Omaha is a five-letter poker game that is commonly played in casinos. It is a variation of the popular Texas Hold'em game, but with some differences. In Omaha, each player is dealt four hole cards instead of two, and must use two of their hole cards and three of the community cards to make the best five-card hand. The game is usually played with a pot limit betting structure, meaning that players can only bet up to the amount of money in the pot.