In this game there will be a grid of gems and you will
need to destroy the gems by forming lines of 3 or more
gems. You can rotate 4 gems in the clockwise or
counter clockwise direction so that some gems will be
lined up and then they will be destroyed. When a
certain number of gems are destroyed, you can advnace
to the next level, but if you fail to do so before the
time limit, then you lose the game. Click the gems to
rotate them, and click the arrow buttons or press the
spacebar to switch the direction of rotation.

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