Instructions:
You have been given a random number.
There are four crystals below. By clicking on a crystal, you will add a specific amount of points to your
total points.
To win, you must match your total points to the given random number. You will lose if your total points 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 value of the crystals.