If you don't have a card to play, you must draw cards from the pile until you do. You do this by matching the color or number of the card placed before yours. The main principle is to get rid of all your cards first. There are various strategies you can use to increase your chances of winning in Una.
The goal of the game is to be the first player out of cards, similar to other Crazy Eights-style card games. UNO Online Multiplayer allows you to play the popular card game Uno in your web browser.