Black And White Mix

A simple ABC based puzzle but with different rule and different fun.
The world is divided into two world: visible and invisible.
Each world has different colors...
You need to draw a line that mixes visible balls and invisible balls with the pattern:
visible-invisible-visible...
This challenging game is the advanced version of Black and White 25.
This game is easy to learn but it is hard to achieve high level and high score.
This game is a great challenge of your reaction and your strategy.
Your goal is to get 25. My lucky number. Hopefully also be yours.
Share your results with your friends and beat their scores in the Game Center!