Game of Circle is a game where a circle having a first color is display on a background having a second color.
Tap the circle as fast as you can, whenever the circle’s color is identical to the background’s color before the circle's color changes.
As you make progress, the circle's color changes faster and faster.
Be careful not to tap when the colors are different, or you’ll have to start once again.
You need fast reactions and nerves of steel!