- 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 the target 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 when the game starts, the game will change the value of each crystal.