Crystal Collector!

Here are the rules:

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At the start of the game you'll be given a random number.

There are four crystals below. Each one has a point value. That value is hidden from you. When you click on a crystal, the points are revealed and are added to your score.

To win the game, your total score has to equal that of the random number. If your total score is higher than the random number, you lose the game.

Note: Every time you start a new game, the values of the crystals change.