Peripheral vision is a part of vision that occurs outside the very center of gaze.
To win this game you will need to use if to good effect. Try to keep your eyes focused on the grid that is filled to find symbols you're looking for.
Play through all 20 levels to be able to enter the highscore. Remember that every millisecond counts.
Find the symbols and click on the corresponding spot in the empty grid. Keep your eyes focused on the grid that is filled.
