This document discusses four different artistic styles used in computer games: photorealism, cell shading, abstraction, and exaggeration. Photorealism aims to make graphics look as realistic as possible, like photos. Cell shading uses bright colors and resembles comic books. Abstract art does not resemble reality and uses shapes and lines rather than realistic objects. Exaggeration is playful and over-the-top, seen in anime and Nintendo Wii party games.