- 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 win the game by matching your total score to random number, you 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 the game starts, the value of the crystals will change!