So as I already said before if you wish for narrative depth and better exploration of thematics, you should strive for genre such as Adventure/Visual Novel games which usually base their strength on it's story telling through text and varying degrees of visual presentation first.
Of course, they can't be compared to movies or even books due to them using the codification of video game to identify themselves. Better though, is when these games are willing to use the strength of it's medium or hardware to further the experience into actual "Citizen Kane" territories.
My better example would easily be 999 Zero Escape on the DS which has the unique feature to tell the narrative part of the story from 2 POV at once using the dual screens to seperate the perspectives.
This is what it means to actively use the strength of video games uniqueness to further it's own narrative.
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