Black & White is a god video game. The player acts as a god whose goal is to defeat Nemesis, another god who wants to take over the world. A primary theme is the concept of good and evil, with the atmosphere being affected by the player's moral choices. The core gameplay mechanic of Black & White is the interaction between the player and an avatar creature, who carries out the players instructions and whose personality change in reaction to how they are treated. (wikipedia.org).