Gaigel is a card game from the Württemberg region of Germany and is traditionally played with Württemberg suited cards. It is a Swabian variant of Sechsundsechzig and may be played with 2, 3, 4 or 6 players. However, a significant difference from Sechsundsechzig and other related games like Bauernschnapsen is the use of a double card deck. The four-player game is usually called Kreuzgaigel. The game emerged in the early 19th century.

The game of Gaigeln is mentioned as early as 1844, along with Ramsen, Hopsen, Hundert und Eins, German Solo, Laubobern and Black Peter, as one of the usual card games played by the menfolk in Württemberg. Specific Gaigel cards were being sold in 1845 in an advertisement in the Kempten Zeitung. In 1846 it is described as a "new card game" that the author and language researcher, Raimund Jacob Wurst (1800–1845), had learned in Bad Ditzenbach in 1843. In 1883, Gaigel is recorded as being played by election officials at a polling station in Württemberg.

For this game cards are used which in the trade are advertised as Gaigel/Binokel and contain a double set of 2×24 playing cards. The description of the suits varies regionally and is also dependent on whether Württemberg or French playing cards are used: in the local dialect they are typically called Eichel (Acorns), Schippen (Spades), Herz (Hearts) and Bollen (Bells).

Within the four suits the precedence of cards is always the same: Deuce (Ace, Daus, Ass, Alte, Sau) → 10 → King → Ober (Queen) → Unter (Jack) → 7 Because there are 2 of each playing card, if both are played in one trick, then the player who led wins the trick. For example, if both Aces of Acorns are played, the trick goes to the player who went first (under the assumption that no-one has trumped).

The following values (card points) are assigned to the individual cards:

The aim of the game is to be the first player or team to score 101 card points or Augen.

The dealer offers the cut to the player on his left and then deals three cards to each player in anti-clockwise fashion (colloquially described as "rechtsherum haut man an die Backe"). The dealer then takes the next card, which is used to determine the trump suit, and places it face up in the centre of the table, before dealing two more cards to each player, so that everyone has a hand of five cards. The talon is then placed crosswise on top of the trump card in the middle of the table so that latter remains partly visible. Should forehand choose not to cut the deck (indicated by 'knocking' on it instead), then - by agreement - five cards may be dealt to each player in turn before the trump card is flipped.

The player to the right of the dealer is the forehand (Vorhand) or eldest hand and leads to the first trick.