Mattel - UNO Showdown card game. UNO Showdown is a card game everyone loves, but with the unexpected thrill of a sudden shower of cards! When the light comes on and the UNO Showdown unit sounds, you have to press the pedal down as quickly as possible. The fastest player wins the showdown and makes cards fly out of the UNO Showdown deck onto the other players! Players try to play all their cards as quickly as possible by placing a matching card in their hand on the top card of the deck. And don't forget to shout "UNO" when you have one card left! Great for a game night with kids, adults, or the whole family.