It's easy to play. You will be shown two cards. You simply have to decide whether the second card is searched for higher or lower than the first card.
As you progress, you will be shown a new card. Choose higher or lower to decide whether it is searched for more or less than the previous card. The objective is to get the most right in a row. If you get one wrong, you lose the game.
The data is based on average monthly global searches in 2017