Overview
Crazy Eights is a shedding-type card game for two to seven players and the best known American member of the Eights Group which also includes Pig and Spoons. The object of the game is to be the first player to discard all of their cards. The game is similar to Switch and Mau Mau.
Originally this was played primarily by children with the left over cards not used in Euchre. Now a standard 52-card deck is used when there are five or fewer players. When there are more than five players, two decks are shuffled together and all 104 cards are used.
Origins
The game first appeared as Eights in the 1930s, and the name Crazy Eights dates to the 1940s, derived from the United States military designation for discharge of mentally unstable soldiers, Section 8. It may have derived from the German game of Mau-Mau.
There are many variations of the basic game, under names including Craits, Last Card, Switch, and Black Jack. Bartok, Mao, Taki, and Uno add further elements to the game.
From Wikipedia (CC BY-SA 4.0).