You'll be given a random number at the start of each game.
By clicking one of the four crystals below you will add a specific amount to your total score.
You WIN the game by MATCHING your total score to the goal. Your total score goes ABOVE the random number? You LOSE!
The trick is the value of each crystal is hidden until you click on it. With the values of each crystal changing each time the game starts.
Good Luck!