UNO can be played by 2-10 players. Each player is dealt seven cards, and the remaining uno online deck is placed face down to form the draw pile. The top card from the draw pile is turned over to start the discard pile.

Gameplay

1. Starting the Game: The player to the left of the dealer goes first and play proceeds clockwise.
2. Playing Cards: Players must match a card in their hand with the top card of the discard pile by color, number, or symbol. Alternatively, they can play a Wild card.
3. Action Cards:
   • Skip: The next player is skipped.
   • Reverse: Reverses the direction of play.
   • Draw Two: The next player draws two cards and loses their turn.
   • Wild: The player declares the next color to be matched.
   • Wild Draw Four: The player declares the next color and the next player draws four cards and loses their turn (can only be played if no other card in hand matches the current color).
4. Drawing Cards: If a player cannot play a card, they must draw one from the draw pile. If the drawn card can be played, they may do so immediately; otherwise, play passes to the next player.
5. Calling UNO: When a player has only one card left, they must shout "UNO!" Failure to do so before another player catches them results in drawing two penalty cards.
6. Ending a Round: The round ends when a player has played all their cards. Points are then tallied based on the remaining cards in the other players' hands.

Scoring

• Number cards (0-9): Face value
• Skip, Reverse, Draw Two: 20 points each
• Wild, Wild Draw Four: 50 points each

The first player to reach 500 points wins the game. Alternatively, players can agree to play a set number of rounds, and the player with the highest score at the end wins.

Strategies for Success

1. Color Management: Keep track of the colors in play and try to manage your hand to avoid being stuck with high-value cards.
2. Action Cards: Use action cards strategically to disrupt your opponents’ plans and protect yourself from drawing too many cards.
3. Wild Cards: Save Wild and Wild Draw Four cards for when they can have the greatest impact, such as blocking an opponent from winning.
4. Observe Opponents: Pay attention to the cards your opponents play and their reactions to understand their strategies and remaining cards.
5. Bluffing: Use the Wild Draw Four card wisely; opponents can challenge its use if they suspect you had a playable card, resulting in penalties if they are correct.