Traditionally, poker is played with a standard deck of cards, but there are many variations. The number of cards dealt face up and the number of rounds of betting varies. The rules of each variation vary, but the objective of each is the same: to create the best hand.

The earliest known form of poker was played with only 20 cards. The best hand at the time was a trip of sevens. However, the ace was regarded as the lowest card in some games.

A poker game can be played with as few as five players. In a standard game, the deck is shuffled by the dealer, who deals cards to the players one at a time. The first player to act is responsible for making the first bet.

The dealer can shuffle the deck in sets or pass out all cards at once. This is known as a forced bet.

In pot-limit games, players can bet or raise the pot. These games customarily set a limit on raises. This is because the stakes may increase after three or four raises. The pot can also be won by a player who makes a bet that no one else calls.

Poker can be played by a group of people around a circular table. Cards are dealt to each player, face up. The hand with the best cards is the winner. A poker player chooses his actions based on game theory and psychology.