There will be four prime numbers on the bottom of game screen.
If you touch those prime numbers, their sum will be printed on the screen.
Touch the screen to blow up the missile!
Remember! The number on the Rocket and the screen has to be same in order to blow up.
As the level goes up, the rockets will fall faster, and the prime numbers and rocket numbers will increase.
Try to get on the world ranking with your fast calculation!
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