Graphics for games can be 2D or 3D and include menu screens, user interfaces, and in-game assets. Basic elements of images include pixels, resolution, aspect ratio, and colors which are described by properties like hue, saturation, and color depth. Images can be manipulated through operations like cut, copy, paste, and filters. Color theory principles around hue, value, temperature, and meaning are important to consider for graphics design. Proper use of light, shadow, visibility, and usability help ensure effective graphics in games.