This document discusses different graphical styles in video games including photorealism, cel-shaded, abstract, and exaggeration styles. Photorealism aims to make games look as realistic as possible through techniques like high detail textures and shading. Cel-shaded games have a cartoon or anime appearance with bright colors. Abstract games have minimal details and focus on puzzles or strategy. Exaggeration takes elements beyond realistic proportions to be dramatic and eye-catching rather than realistic. Each style suits different genres like photorealism for shooters and cel-shaded for platforms. Color theory and tone also impact the mood for each style.