When you play UNO online, you can experience the rush of holding the final card, sinking your opponent with a +2, or getting even by letting go of a +3 you've been holding the entire game.   How does Uno online ? If you're new to UNO Online, each player is dealt 7 cards, and the round is won by the one who eliminates all of them first before the other players. These cards come in 4...