The Shuffle Hands card is a unique action card introduced in certain UNO versions, including UNO Remix and UNO Super Mario.

can only be played if the player has no cards matching the current color. 5. Saying 'UNO': When you have only one card left, ...

The game continues until a player has one card. When you’re down to one card, shout, “Uno.” If you forget, you’ll draw two cards as a penalty. The first player to play all their cards wins ...