Official poker is a game of chance and skill, played by people in home games, in casinos, and at professional tournaments. The rules of the game vary from place to place, but there are a few universally accepted principles. Players must play within their bankroll limits and only participate in games with opponents at their skill level or below.

The standard poker pack contains 52 cards and the rank of each card is Ace, King, Queen, Jack, 10, 9, 8, 7, 6, 5, 4, and 3. There are four suits (spades, hearts, diamonds and clubs) but no suit is higher than another. Some poker variants use multiple packs or add wild cards (jokers, deuces, and one-eyed jacks).

After each player receives their two hole cards, a round of betting takes place. Each player must put chips into the pot equal to the amount of the bets made by the players to their left in turn.

A fifth card is then dealt face up, this is called the river. A final round of betting occurs and the player with the best five card hand wins the pot.

If the player feels the action is unfair, they can call an adjudicator to make a ruling. This is usually done if a player has unnecessarily touched other players, their cards or chips, failed to maintain good card and chip visibility and countability, bet out of turn, or showed their cards before the flop.