Photo-realism is when artwork is made with incredible detail to make it look as real or better than a photograph, this is used in games to make it look realistic.
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| (http://www.dsogaming.com/wp-content/uploads/2014/11/project-cars-comparison-672x372.jpg) |
CELL SHADING
Cell shading is when the image is shaded in layers, usually giving it a more cartoon-ish look.
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| (http://i.kinja-img.com/gawker-media/image/upload/s--DSs5RCik--/18hglr9xbo8v9jpg.jpg) |
ABSTRACTION
Abstraction is an art style that stands out, mostly used in games more about the shapes and colours than other gameplay features.
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| (http://i.imgur.com/B4u0FNS.gif) |
EXAGGERATION
Exaggeration is all about over the top art, the most common example being bullet hell games.
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SO MANY BULLETS OHGODWHY (http://static.giantbomb.com/uploads/scale_small/0/2714/203827-hellofbullet.jpg) |
