The world in reality is not black and white at all, it has many shades and nuances, but by playing the game the world can afford to fantasize and divide the world strictly by colors, as in the Duality game. Two playing fields will appear in front of you: black and white, created from square tiles. you will manipulate the black field by moving the white ball. At the same time, on a white field, which is nearby, a black ball will move synchronously in a mirror image. The task is to deliver both balls to the tile of the corresponding color in Duality.