Poker is a collection of card games where players compare hands to determine the best one based on specific game rules. It is played worldwide, although rules may differ in certain regions. While the original version involved a 20-card deck, the standard practice today is to use a regular deck of cards. However, in some countries, shorter decks with 32, 40, or 48 cards are also used. As a result, poker games vary in deck configuration, number of cards in play, face-up or face-down dealing, and shared cards among players. All poker games involve rounds of speculation. In most modern variations, the initial round starts with players making a forced speculation, such as a blind or ante. In standard poker, each player bets based on their perceived value of their hand compared to other players. The Speculating continues clockwise, with each player either matching the highest Speculating made so far (calling), folding and forfeiting their current Speculating and further involvement, or raising the Speculating. The speculation round ends when all players have called the last Speculating or folded. If only one player remains after others fold, they win the pot without revealing their hand. If multiple players are still in the game after the final speculation round, a showdown occurs where the hands are revealed, and the player with the best hand takes the pot.
Craps is a dice game in which players Speculating on the outcomes of the roll of a pair of dice. Players can wager money against each other (playing "street craps") or against a bank ("casino craps"). Because it requires little equipment, "street craps" can be played in informal settings. While shooting craps, players may use slang terminology to place bets and actions. Players use casino chips rather than cash to Speculating on the Craps "layout," a fabric surface which displays the various bets. The bets vary somewhat among casinos in availability, locations, and payouts. The tables roughly resemble bathtubs and come in various sizes. In some locations, chips may be called checks, tokens, or plaques. Against one long side is the casino's table bank: as many as two thousand casino chips in stacks of 20. The opposite long side is usually a long mirror. The U-shaped ends of the table have duplicate layouts and standing room for approximately eight players. In the center of the layout is an additional group of bets which are used by players from both ends. The vertical walls at each end are usually covered with a rubberized target surface covered with small pyramid shapes to randomize the dice which strike them. The top edges of the table walls have one or two horizontal grooves in which players may store their reserve chips.
Blackjack (formerly Black Jack and Vingt-Un) is a casino banking game. It is the most widely played casino banking game in the world. It uses decks of 52 cards and descends from a global family of casino banking games known as Twenty-One. This family of card games also includes the European games Vingt-et-Un and Pontoon, and the Russian game Ochko Blackjack players do not compete against each other. The game is a comparing card game where each player competes against the dealer. Blackjack rules are generally set by regulations that establish permissible rule variations at the casino's discretion. Blackjack comes with a "house edge"; the casino's statistical advantage is built into the game. Most of the house's edge comes from the fact that the player loses when both the player and dealer bust. Blackjack players using basic strategy lose on average less than 1% of their action over the long run, giving blackjack one of the lowest edges in the casino. The house edge for games where blackjack pays 6 to 5 instead of 3 to 2 increases by about 1.4%, though. Player deviations from basic strategy also increase the house edge.