Rule 1: The main objective of the game is to be the first player to empty your hand of all cards.
Rule 2: Match the cards in your hand to the top card on the discard pile by either color or number.
Rule 3: Unlike similar games, there's no requirement to declare "UNO" when you have one card left, streamlining the gameplay.
Rule 4: You can play with anywhere from 2 to 8 players in the classic mode, or team up for 2vs2, 3vs3, 4vs4, and 6vs6 matches.
Rule 5: The game is versatile, supporting both portrait and landscape screen orientations.

Action: Click or tap a card in your hand to select it.
Action: If it's a valid move, it will automatically move to the discard pile.
Action: If you cannot play a card, tap the draw pile to draw a new card.

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You win by being the first player to successfully play all the cards from your hand onto the discard pile.

Yes! Ocho supports multiplayer, allowing you to play with up to 8 players in classic mode or team up in various configurations.

No, one of the unique features of Ocho is that you don't need to declare "UNO" or any equivalent phrase, keeping the game fast-paced.