The game of Nain Jaune or Yellow Dwarf, also formerly called Lindor, is an "attractive and unique traditional French card game" using a board comprising five compartments or boxes. It is a reasoned game of chance because it combines the hazards of card distribution with the strategy of building suits. Nain Jaune, which is considered a classic French game, is named after the seven of diamonds, which is depicted as a yellow dwarf in the centre of the game board.

A card game is any game that uses playing cards as the primary device with which the game is played, whether the cards are of a traditional design or specifically created for the game (proprietary). Countless card games exist, including families of related games. A small number of card games played with traditional decks have formally standardized rules with international tournaments being held, but most are folk games whose rules may vary by region, culture, location or from circle to circle.