*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 cyrstal is hidden from you until you click on it.
*Each time when the game starts, the game will change the values of each crystal.