You are given a random number at the start of the game.
There are four crystals below. By clicking on a crystal, you add a specific amount of
points to your total score.
The value of each crystal is assigned randomly and you can figure them out once you click on
each gem. Each time the game starts, the value of the crystals changes.
You win the game by matching your total score to the target score; you lose the game if your
total score exceeds the target score.