Grenge: Circle Hit Game

Grenge is a casual tapping game fun for users of for all ages.
You must hit the green balls which are spinning around an imaginary circle with orange ball.
In each level, the number of orange balls is two more than the number of green balls on the level.
And if run out of orange balls, game over. So you must wait the right time!
Also, in the next levels, difficulty is increasing and red balls start to appear in random positions. If you hit the red ball game over!

Shortly, don't hit red balls and don't waste orange balls.