This game's goal is for two helicopters to fly forward avoiding obstacles.
There are two helicopters in the center.
There are two jump arrows in total in the bottom left and right.
If you touch left jump arrow, then left helicopter will flap.
If you touch right jump arrow, then right helicopter will flap.
Game will be over if one of two helicopters collides with obstacles or falls down.
All the two helicopters must fly avoiding obstacles.
It will not easy.
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