Photorealism aims to make game graphics look as realistic as possible by using photos of real objects, but it is costly and time-intensive. Cel shading, also called toon shading, makes graphics look hand-drawn like comics or cartoons through simplified lighting and was popularized in video games around 2000. Abstract art styles use basic geometric shapes and lines without depicting real objects, like the game Geometry Wars. Exaggeration is used in games like Wario Ware and Rayman Raving Rabbids through cute, caricatured characters with over-the-top facial expressions and actions to engage players.

1. Artistic Styles
Photorealism
Photorealism is the art style of trying to create an character, objects and scenes to make them as
realistic as possible by taking pictures of real objects and texturing them how them object looks.
It is mainly used in first person shooters to show detail. Using photo realism in games usually
means the game will take a lot longer to create and cost more money.
Cel Shading
Celshading ortoon shading is a non-photorealistic rendering where an illumination model designed
to make computer graphics appear to be hand-drawn.
Cel-shading is often used to mimic the style of a comic book or cartoon. It is somewhat recent,
appearing from around the beginning of the twenty-first century. In addition to computer graphics,
it most commonly turns up in video games.
However, the result of cel-shading has a very simplistic feel like that of hand-drawn animation. The
name comes from cels (short for celluloid), the clear sheets of acetate which are painted on for use
in traditional 2D animation, such as Disney classics.

2. Abstraction
Abstract art style often employs a lot of lines and geometric shapes that don't resemble any
real-life objects. For example, Geometry Wars, a game which uses nothing but lines and
geometric shapes
Exaggeration
Video games such as Wario Ware and Rayman Raving Rabbids exemplify cute caricatures
with exaggerated expressions and actions and engage players’ participation and movements.
For example, the rabbits in Rayman Raving Rabbids all posses abnormally large mouths with
two big front teeth and also exhibit childlike expressions of naivety and mischievousness.
When the player character is in direct or indirect physical contact with the rabbits, they
scream in an adorable way that produces giggles and laughter in users and viewers.