As mentioned above, seven-card stud is probably the most common form of the game, with most other games being variants of that, although five-card stud is also a basic pattern upon which many variations are built. These games are described on their own page. Most of the games described below started as ad-hoc variants, but they have either become popular enough to have a common name, or else have some unique feature to merit including them here.
SIX-CARD STUD
Six-card stud is usually played as identical to seven-card stud, except that the last face-up round is removed (Thus it is two down, three up, one down). It can also be played as 1-4-1, where the first betting round occurs after only two cards are dealt (one down and one up). This latter form more closely resembles five-card stud with an extra downcard.
A variation called Alligator stud starts with one hole card and one upcard, followed by a first betting round; then two upcards are dealt to each player followed by a second betting round; then a fourth upcard and betting round, and finally a fifth upcard and betting round. This game plays well at no limit and pot limit. The same game, but with each player initially dealt two downcards and one upcard, and restricted to using only one of his downcards in his final hand, is called Zanetti stud.
EIGHT-OR-BETTER HIGH-LOW STUD
Also known as "seven eight" or "stud eight", eight or better is the most common form of high-low split stud. Played as seven-card stud, but the pot is split between the player with the highest hand and the player with the lowest hand (using the ace-to-five low values). An 8-high hand or lower is required to win low. Betting takes place as if playing standard high-hand stud; that is, low card pays the bring-in, if any, on the first round, and subsequent rounds start the betting with the highest showing poker hand. The showdown is cards speak, that is, there is no declaration for high and low. Each player may choose a different subset of five cards to play for high and low. For example, a player with A-A-8-6-6-4-3 can play a high hand of A-A-6-6-8, and a low hand of 8-6-4-3-A. A player with K-9-8-7-6-5-4 can play a 9-high straight for his high hand, and 8-7-6-5-4 for low (which is the worst possible qualifying low, but it does qualify). A player with K-9-8-7-7-6-5 can play the 9-high straight for high, but cannot play any low hand, because he cannot make an 8-high or lower. If there is no qualifying low hand, high hand takes the entire pot.
This game plays well with a bug or two in the deck.
MISSISSIPPI STUD
Mississippi stud was created to make seven-card stud play better at no limit and pot limit, and is slowly becoming popular for that reason. It is also often played with a betting structure more typical of Texas hold 'em: fixed limit with the last two rounds double the limit of the first two. The bring-in should be less than the first-round limit.
Initial deal as in standard seven-card stud. After the first betting round, two upcards are dealt to each player, so each now has two down and three up (so unlike standard stud there is no betting on "fourth street"). A second betting round is followed by one more upcard and a third betting round. Finally, the last card is dealt face up, so that each player ends with two downcards and five upcards. Because each player has five upcards on the last round, straights, flushes, and full houses count as "high hand exposed" for the purpose of determining who must bet first. After the seventh street bet there is a normal showdown.
Can also be played with low hands, or high-low split. If three downcards are dealt initially instead of two, with the restriction that no more than two of them can be used in the final hand, this variation is called Murrumbidgee stud.
MEXICAN STUD
Various forms of roll your own five-card stud, often with a stripped deck and wild cards, are called Mexican stud, Mexican poker, or Stud loco. One such variant played by the Casino San Pablo in northern California has these rules: 8s, 9s, and 10s are stripped from the deck, and a single joker is added (the deck therefore contains 41 cards). The 7-spot and the J become consecutive, so that 5-6-7-J-Q is a straight. A flush beats a full house (with fewer cards of each suit, they are harder to get). The joker plays as a bug if it is face up, and fully wild if it is face down. The game is played as five-card stud choose-before roll your own. It is usually played with a very high ante, and the high card on the first round pays the bring-in.
The game of Shifting sands is Mexican stud in which each player's hole card (and all others of that rank) are wild for that player only.
BLIND STUD
Blind stud is a variant of stud poker in which all cards are dealt face down. Any stud poker game can be played "blind" by having all cards dealt face down.
Blind stud poker was commonly played in California cardrooms until 1985. The California gambling law makes specific games named by the law illegal, including twenty-one, faro, fantan, and "stud-horse poker". Until 1985, the California attorney general's office interpreted this to mean that draw poker was legal and all forms of stud poker were not, so California cardrooms played exclusively draw poker (mostly lowball). Blind stud was considered a form of draw poker, because as in draw all cards are hidden. Unlike draw, players do not discard cards they intend to replace. In 1985, cardroom owners convinced the state that "stud-horse poker" was an obsolete house-banked game, and that all forms of modern poker were legal. Today, the most popular game in the state is Texas hold 'em.
Not constrained by obscure California law, home games generally do not play blind stud, though some of the forms of blind stud are challenging and well-balanced, including some of those previously offered by California cardrooms. Some of cardrooms got very creative with blind stud games so they could offer players some variety. For example, a club in the Sacramento suburbs used to offer a seven-card high-low split blind stud game which was played 3-2-1-1 (four rounds; three cards dealt on the first, two on the second, then one and one), with two jokers in the deck acting as bugs, and with the double-ace flush rule.