Sit down at an Omaha table after years of Texas Hold'em and everything looks familiar: a dealer button, two blinds, a flop, a turn and a river. Then the cards arrive, and there are four of them in your hand instead of two. That one change, plus a strict rule about how those cards may be used, turns Omaha into a noticeably different game. It is one of the most popular community-card games online, and learning its rules properly saves a lot of confusion at showdown.
The shape of a hand
Omaha uses a standard 52-card deck and usually seats between two and ten players. A hand runs like this:
- Blinds. The two players to the left of the dealer button post the small blind and the big blind.
- Hole cards. Every player receives four private cards, face down.
- Pre-flop betting. Starting to the left of the big blind, players fold, call or raise.
- The flop. Three community cards are dealt face up in the middle, followed by a round of betting.
- The turn. A fourth community card, then another betting round.
- The river. The fifth and final community card, then the last betting round.
- Showdown. Remaining players reveal their cards, and the best five-card hand wins the pot.
Hand rankings are the same as in Hold'em, from high card at the bottom to royal flush at the top. If you are newer to poker in general, our piece on online poker strategy basics is a gentle place to start.
The rule that defines Omaha
Here it is, and it is worth reading twice: your final hand must use exactly two of your four hole cards and exactly three of the five community cards. Not one, not three, not four. Exactly two from your hand, exactly three from the board.
In Hold'em you may use any combination of your two cards and the board, including playing the board itself. Omaha does not allow that. The table below shows how the rule changes the reading of a few situations.
| Situation | In Hold'em | In Omaha |
|---|---|---|
| Four hearts on the board, you hold one heart | You have a flush | No flush: you need two hearts in your hand |
| Board shows a straight from five to nine | Everyone can play that straight | Nobody can use all five board cards |
| You hold three aces, one ace on board | Not possible with two hole cards | Only two of your aces count, so you have three of a kind, not four |
| Board pairs, you hold one matching card | Three of a kind | Three of a kind, using that card plus one other from your hand |
The first row is the classic beginner's mistake. Seeing four of a suit on the board and one in your hand feels like a flush, but in Omaha it is not.
Pot-limit: the usual betting structure
Most Omaha games online are played as Pot-Limit Omaha, often shortened to PLO. In pot-limit games, the most you can raise is the size of the pot at that moment, including the amount you would need to call first. Many poker sites show a "pot" button that calculates the maximum for you.
Pot-limit sits between fixed-limit games, where bet sizes are set in advance, and no-limit games, where you can push all your chips in at any time. Because every player holds four cards, strong hands are more common in Omaha than in Hold'em, and pots tend to grow quickly. That is part of the game's appeal and part of the reason to keep stakes modest while you learn.
Hi-lo: a variant worth knowing
You may also see Omaha Hi-Lo, sometimes called Omaha Eight or Better. Here the pot is split between the best high hand and the best qualifying low hand, which is five different cards of eight or lower. Not every hand produces a qualifying low, in which case the high hand takes everything. The two-card rule still applies, separately to the high and the low hand. It is a fun variant, but it is worth getting comfortable with standard Omaha first.
Habits for a first Omaha session
- Before betting, sort your four cards by suit and rank so pairs and suited cards are easy to see.
- At showdown, ask yourself which two of your cards you are using. If the answer needs three, the hand is wrong.
- Start at low stakes or play-money tables to practise reading hands.
- Remember that online poker rooms take a small fee from pots, known as the rake, which works against every player at the table.
Omaha is a rich, lively game once the two-card rule becomes second nature. Poker is for adults aged 18 and over: decide on a buy-in you are comfortable losing, stop when it is gone, and make sure online poker is legal in your country before you sign up anywhere.