You will be given a random number at the start of each round.
There are four crystals below. By clicking on each crystal, you will add a specific amount of points to your total score.
You win the game by matching your total score to the random number; you lose the game if your total scores goes above the random number.
The value of each crystal is hidden from you until you click on it.
Each time a round starts, the random number to match and the crystal values will change.