-You will be given a random number at the start of the game.

-There are four crystals below. By clicking on a crystal, you will add a specific amount of points to your total score.

-You will win the game by matching your total score to the random number. You will lose the game if your total score goes above the random number.

-The value of each crystal is hidden from you until you click on it.

-Each time when the game starts, the game will change the values of each crystal.