It's the matching game you know, now with double-sided cards and a special rule that really shakes things up! Players race to get rid of all their cards by matching a card in their hand with the current card shown on top of the deck. When the "flip side" card is played, players must flip their hands over and play the other side of their cards. When you're down to one card, don't forget to yell "UNO!"? Ages 7 and up.