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Play this classic memory game on Apple WatchThere are 4 colored squares which light up in sequence. Your task is to memorize the sequence and repeat it by tapping on the colored squares.Each time you're successful, the sequence and your score will increase by 1. If you tap the wrong square, your score is reset to 0 and a new sequence begins. Try to beat your personal best!Tetradic: "Relating to something that has a group of four".