The changes in the different Omaha variations can influence the type of limit, the number of winners, and more factors that will be discussed here. Like for other poker games, there is no preferred Omaha variation, and it depends on the player's preference, and how you prefer to play Omaha.
Type of Limit - Omaha poker can be played as a pot limit game as well as a fixed limit game. These Omaha variations mean that you can either choose a pot limit Omaha variation, where the highest raise cannot exceed the pot sum, or choose a fixed limit Omaha variation, where the raise is set in advance. In a $10/$20 fixed limit Omaha variation, players bet and raise in increments of $10 on the first two rounds, and with increments of $20 on the last two rounds. The maximum number of raises for Omaha poker is usually three raises. In pot limit Omaha variations, the first blinds are set by the table's requirements, and during the game itself you can observe the increased wagering, because the pot is getting bigger itself. No Limit Omaha is another Omaha variation, where there is no limit to the wager the players make on the betting rounds, and for the initial bet as well.
Omaha/8 Variation - This is a high/low split Omaha variation, in which the best hand and the worst hand split the pot between them. The worst hand is defined as five unpaired cards, all lower than the rank of 9. You have to use all three flop cards to win with a high hand as well as with a low hand. If no player has the low hand requirements, then the pot is given solely to the player with the highest ranked hand.
In Europe, the most common game of Omaha variations is Omaha high, where players play for the highest hand only. This has the same rules of Omaha poker, only the low hands do not count, and the pot is given solely to the highest hand on the table.
When you enter an online casino, you should notice the limit type and the winning conditions for the Omaha game, so as not to be surprised later in the game.