Game Art Styles!

Photo Realism!

Photo Realism is where a game developer will try and make his/her game look as realistic as possible (like your looking at a photograph). Typical photo realistic games are Crysis, Forza Motor sport 3 and Grand Tourismo 5

 Cel Shading!

Cel shading is where the Developer tries to make the game look almost Hand drawn (with a black line around the edges, and cartoony graphics). Good examples are Super Paper Mario and XIII.

Exaggeration!

Exaggeration is where the Developer exaggerates features on animations such as the eyes. These games are very familiar with Japanese developers. A good example of an exaggerated game is The Fantasy Franchise.

Abstraction!

Abstract games are where the developer tries to make the game seem wonderfully weird!, with weird shapes making creatures and landscapes(clue is in the name 'abstract'). Games like this are Patapon.