Poker is a card game played between two or more players and the object of the game is to win a pot. A player may earn money in the pot by having the highest hand at showdown, or by making a bet that other players call. The amount of money placed into the pot is determined by a combination of chance, psychology and game theory.

In most forms of poker, a single standard 52-card pack is used with one or more jokers. A shuffled deck is used to speed up the deal. During each betting interval a player, called an active player, places chips (representing money) into the pot. The player must either match the bet made by the previous active player or raise it.

Top players fast-play their strong hands, meaning they bet early and often to build the pot. This can also help to chase off other players who are waiting for a draw that could beat their hand.

Another key skill is reading the opponent. Experienced players work out the range of cards that their opponent could have and how likely they are to hit those cards, which allows them to make better decisions. This requires mental growth and development, honed by practice. Poker can also be a great way to develop other skills such as emotional regulation and strategic thinking, which can enhance cognitive abilities.