Instructions:

The matching rules are the same as in the card game Set. At the top of the screen are four rule cards: number, shape, color and texture.

Below these four rule cards is a deck of 81 cards with symbols on them. At every turn of the game, you need to click on three cards in the deck. The three cards you choose must match all four rules. If a rule is light blue ("all the same"), it means all your cards must be the same, according to that rule. If the rule is pink ("all different"), it means all the cards must be different, according to that rule.

For example, if the number rule is light blue, but all of the other rules are pink, then you need to pick three cards that all have the same number of symbols, but all different shapes, colors and textures.

After a successful turn, the three cards you picked will all get smiley faces in front of them. You win the game when all 81 cards have smiley faces.

Note: After every turn, any of the four rules might change color, so pay close attention to the four rule cards.

If you get stuck, you can slide any smiley face over to a neighboring square.