There are 108 cards in an Uno deck. The deck is made up of cards in four colors numbered from zero to nine. Additionally, each deck includes eight "Skip" cards, eight "Reverse" cards, eight "Draw Two" cards, four "Wild" cards and four "Wild Draw Four" cards.
Uno is a card game played with a special printed deck. It was developed in 1971 and became a Mattel product in 1992. The object of the game is for each player to put down all of the cards in his hand. Each card played must match the previous card by color or number. When a player has one card remaining, he must shout "Uno!" or risk receiving a penalty.