I'll start. I really loved Halo 3's art style, I loved the bright colours. I really hope Halo 5's art style is like Halo 3. I found Halo 4's to be a bit toooo bright and a bit bland but none the less I loved it though I still preferred past game art styles.
I should have chose Super Mario Galaxy 2 for the main but whatever people already know how awesome that [url=http://projectrunwaywii.com/wp-content/uploads/2013/02/Super-Mario-Galaxy-2-Screenshot-15.jpg]looked.[/url].
I tend to like really bright and colourful art styles to be honest with an even colour split, not too grey, not too blurry, not too bland and not toooooo bright or tooooo dark.
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The Darksiders games have pretty good art styles. It's like a mix between realism and comic book art.