Crystals Collector!

You will be given a random number at the start of the game!
Click on the four crystals below. A click on a crystal will add a specific amount of points to your total score.
You win by matching your total score to the random number, you lose 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.