You will be given a target score at the start of the game.

There are four crystals below. By clicking 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 score. You lose the game if your total score goes above the target score.

The value of each crystal is hidden from you until you click on it.

Each time you restart the game, the value of the crystals will change.