Joker (playing card)
The Joker is a playing card found in most modern French-suited card decks, as an addition to the standard four suits (clubs, diamonds, hearts, and spades). From the second half of the twentieth century, they have also been found in Spanish and Italian suited decks excluding stripped decks. The Joker originated in the United States during the Civil War and was created as a trump card for the game of Euchre. It has since been adopted into many other card games, where it often acts as a wild card, but may have other functions such as the top trump, a skip card (forcing another player to miss a turn), the lowest-ranking card or the highest-value card. By contrast, a wild card is any card that may be used to represent another card or cards; it need not be a joker. The Joker is unique within the French pack in that it lacks an industry-wide standard appearance.
In the game of Euchre, the highest trump card is the Jack of the trump suit, called the right bower (from the German Bauer or Jack); the second-highest trump, the left bower, is the Jack of the suit of the same color as trumps. The concept appears to have originated from Germany where the games, Juckerspiel and Bester Bube ("Best Bower") also used Jacks as best, right and left bowers. Around 1860, American Euchre players may have devised a higher trump, the "Best Bower", out of a blank card.
Samuel Hart is credited with printing the first illustrated "Best Bower" card in 1863 with his "Imperial Bower". Best Bower-type jokers continued to be produced well into the 20th-century. Cards labelled "Joker" began appearing around the late 1860s with some depicting clowns and jesters. It is believed that the term "Joker" comes from Jucker or Juckerspiel, the original German spelling of Euchre. One British manufacturer, Charles Goodall, was manufacturing packs with Jokers for the American market in 1871. The first joker for the domestic British market was sold in 1874. Italians call jokers "Jolly" as many early cards were labelled "Jolly Joker".
The next game to use a joker was poker around 1875 where it functioned as a wild card. Packs with two jokers started to become the norm during the late 1940s for the game of Canasta. Since the 1950s, German and Austrian packs have included three jokers to play German Rummy; in Poland the third joker is known as the blue joker; and, in Schleswig-Holstein, Zwickern packs come with six jokers.
Jokers do not have any standardized appearance across the card manufacturing industry. Each company produces their own depictions of the card. The publishers of playing cards trademark their jokers, which have unique artwork that often reflect contemporary culture. Out of convention, jokers tend to be illustrated as jesters. There are usually two Jokers per deck, often noticeably different. For instance, the United States Playing Card Company (USPCC) prints their company's guarantee claim on only one. More common traits are the appearance of colored and black/non-colored Jokers. At times, the Jokers will each be colored to match the colors used for suits; there will be a red Joker, and a black Joker. In games where the jokers may need to be compared, the red, full-color, or larger-graphic Joker usually outranks the black, monochrome, or smaller-graphic one. If the joker colors are similar, the joker without a guarantee will outrank the guaranteed one. With the red and black jokers, the red one can alternately be counted as a heart/diamond and the black is used to substitute clubs/spades. The Unicode for playing cards provide symbols for three jokers: red, black, and white.
Many decks do not provide the Joker with a corner index symbol, of those that do, the most common is a solid five-pointed star or a star within a circle. It is also very common for decks to simply use a stylized "J" or the word "JOKER" in the corner.
Joker collecting has been popular for an unknown amount of time but with the advent of the internet and social media, it has emerged as a hobby. Many unusual jokers are available for purchase online while other collectible jokers are catalogued online for viewing. The Guinness World Records has recognized Denoto de Santis, an Italian magician, as having the world's largest collection of jokers.
Tarot and Tarock card games
The Joker is often compared to "(the) Fool" in the Tarot or Tarock decks. They share many similarities both in appearance and play function. In Central Europe, the Fool, or Sküs, is the highest trump; elsewhere as an "excuse" (L'Excuse) that can be played at any time to avoid following suit but cannot win.
Practitioners of cartomancy often include a Joker in the standard 52-card deck with a meaning similar to the Fool card of Tarot. Sometimes, the two Jokers are used. An approach is to identify the "black" Joker with a rank of zero with the Fool and the "red" Joker with "the Magician", also known as "the Juggler", which is a card with a rank of one that is somewhat similar in interpretation and is considered the first step in the "Fool's Journey".
Use of the Joker in card games
In a standard deck, there are usually two Jokers. The Joker's use varies greatly. Many card games omit the card entirely; as a result, Jokers are often used as informal replacements for lost or damaged cards in a deck by simply noting the lost card's rank and suit on the joker. Other games, such as a 25-card variant of Euchre which uses the joker as the highest trump, make it one of the most important in the game. Often, the joker is a wild card, and thereby allowed to represent other existing cards. The term "joker's wild" originates from this practice.
The Joker can be an extremely beneficial, or an extremely harmful, card. In Euchre it is often used to represent the highest trump. In poker, it is wild. However, in the children's game named Old Maid, a solitary joker represents the Maid, a card that is to be avoided.
Role in multi-player games
- Euchre, 500: As the highest trump or "top Bower".
- Canasta: The joker, like the deuce, is a wild card. However, the joker is worth 50 points in melding, as opposed to 20 for the deuce.
- Gin Rummy: a wild card, able to be used as any necessary rank or suit to complete a meld.
- Chase the Joker: An alternative version of Old Maid where the Joker card is used instead of the Ace.
- Poker: A joker can be wild, or can be a "bug", a limited form of wildcard which can only be used to complete straights and flushes.
- War: In some variations, beats all other cards.
- Pitch: A point card in some variations. Jokers usually are marked as "High" and "Low", one outranking the other.
- Daihinmin: a wild card, or a deuce (which ends the round and clears the discard pile).
- Crazy Eights: a "skip" card, playable on top of any other card, that forces the next player to lose a turn.
- Spades: uncommon, but can fulfill one of two roles. When playing with three or six players they are added to make the cards deal evenly (18 or 9 cards each, respectively). They are either "junk" cards playable anytime that cannot win a trick, or they count as the two highest trumps (the two Jokers must be differentiable; the "big Joker" outranks the "little Joker"). They also can be used in conjunction with teammates cards to create a pseudo-"trump", i.e. an Ace of Hearts and Joker played together would be counted as an Ace of Spades, inferior only to a natural Ace of Spades.
- Double King Pede: As the lowest-ranked card, but worth 18 points.
- Go Fish: In a game with two players, the joker pair is often used to bring the number of pairs to 27 and prevent a 13-13 tie.
- Dou dizhu: Jokers are used as the highest value cards; one is little and one is big, usually the colored one being bigger. Both Jokers together is the only unbeatable play.
Role in patience (solitaire) games
- Forty Thieves: the Joker is placed on the foundations while the natural card is unavailable. Any applicable cards are placed over the Joker. When the natural card becomes available, it replaces the Joker, which in turn is placed on the top of the foundation pile. When the Joker is placed on an empty foundation, it stays there until an ace appears.
- Freecell: the Joker functions the same way as mentioned above. But when the natural card it replaces becomes available and the Joker is placed on top, the Joker can be placed on another foundation.
- Golf: where Kings can be built, the Joker, whenever available, is placed on the wastepile as a wild card and any card can be placed over it.
- Klondike: the Joker acts the same way as it is in Forty Thieves. It can also be built while it is still on the tableau. The United States Playing Card Company's version, created by Joli Quentin Kansil, uses two Jokers, with the black joker to be used as a wild black card and the red joker as a wild red card. 
- Pyramid: the Joker is discarded together with any available card. In this case, the stock is dealt one card at time and can be reused twice.
- Aces Up: The Jokers are used to clear out a row and are sometimes referred to as "Joker Bombs". When a Joker is dealt into a column, the entire column is reshuffled into the stock and that particular Joker is removed from the game. This leaves an empty foundation slot and greatly increases the win rate.
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- Media related to Jokers (playing card) at Wikimedia Commons