This game is similar on Texas Holdem, but with the certain differences.
Players allowed to form the combinationon on four invisible cards, it is possible only to form two cards and three general cards from a table.
Other aspects of game same as well as in texas холдеме: rounds of trade, flop and preflop, blind bets and so on.
One more difference is for the player it is necessary to make a combination of five cards of nine, 3 from a table and 2 from the hand.
There are other versions of Omaha:
Omaha High-Low - as well as other similar games here pot divided between the strongest and weakest hand. The weak here will be a hand in which there are no pairs and cards more then eight, notice that here flushes and straight not counted in hand calculations. It is possible to collect simultaneously the weakest and strongest combination, also if anybody does not have the weakest hand, the player with the strongest cards takes away all pot.
5 Cards Omaha - the player receives five cards on hands(invisible).
Omaha hi - sligtly more popular than Omaha high low.
Main reasons why you lose at poker