The history of poker is debatable. The 15th century German game Pochspiel was one of the earliest known games to incorporate betting, hand rankings, and bluffing. Though there is no specific description of the Persian game of As Nas prior to 1890, poker closely resembles nas. The 1937 edition of the Complete Hoyle by Foster had a first description.

Foster penned: “the game of poker, as first played in the United States, five cards to each player from a twenty-card pack, is undoubtedly the Persian game of as nas.” By the 1990s, gaming chroniclers, among them David Parlett, began to dispute the idea that poker is an express offshoot of As Nas. A French game similar to poker, poque, is evidenced to have been played around the region where poker is said to have originated. The Irish Poca (Pron. Pokah) is likely to be where the name of the game descended from. The Irish Pokah or French poque, which derived from the German pochen (to bluff or to knock) are also likely pre-descendants. No one really knows whether any of those games were the beginning of poker. Sharing ancestry with the Renaissance game of primero and the French brelan is how it is commonly regarded. Bluffing has been used in an English game called bragg, which came from the game brelan. There were other games where players would bluff as well; poker may have been influenced by these games.

Today many reject these stories of how the game started. They focus, instead, on the card play in poker, which is trivial and could have come from many different types of games, or based on general card play principles. The distinctive features of poker are related to the betting, and are not a feature of any known older game. When you look at it this way, it appears that early to mid-1700′s is when poker began, and it covered the area near the Mississippi River by 1800. Played in various forms with 52 cards, it included both straight poker and stud. A two player variant was 20 card poker. (English practice commonly reduced the deck in card games when there are fewer players). The historical movement that also saw the invention of commercial gambling has been linked to the development of poker.

English actor Joseph Crowell recounted that the game was played in New Orleans in 1829, that the deck was only 20 cards, with four players wagering upon who had the best hand. Author Jonathan H. Green, „An Exposure of the Arts and Miseries of Gambling” (G.B. Zieber, Philadelphia, Pennsylvania, 1843) also mentions Poker. People would gamble on riverboats from Mississippi for fun and thus the game spread. It is thought to have become a part of the frontier pioneer ethos as it spread to the West during the Gold Rush, and to the north along the Mississippi River.

The full 52-card English deck was used and the flush was introduced soon after this spread. A draw was added before the year 1850 (as it was first mentioned in print inside a handbook of different games). A number of additions such as stud poker (five-card variant) and the straight were added during the American Civil War. The wild card (around 1875), lowball and split-pot poker (around 1900), and community card poker games (around 1925) are examples of further American developments.

American culture and English culture hold the importance of the game and jargon of poker. Used in everyday conversation, even by persons that are not aware of their poker origins, as cliches and phrases such as ace up one’s sleeve, blue chip, ace in the hole, beats me, cash in, high roller, poker face, call one’s bluff, pass the buck, up the ante, stack up, wild card, when the chips are down, hijack, and others all originated at the poker table.