Click "1 PLAYER" or "2 PLAYERS" to start.
ONE PLAYER: Click a card, then a second card. When you click the third card, if the first 2 did not match, they will flip down. Continue until all the matches have been found. Then try to beat your best score.
TWO PLAYERS: Click a card. Click a second card. When you click this second card, the player's turn information at the bottom of the game will change if the cards did not match. And the next card would then be clicked by the other player. Continue until all the matches are found.