Game Over: Press Start to Continue by David Sheff is a really good videogame book.

It's a history of Nintendo and how they came to the US. 

There is also a section about how they wrangled the rights for Tetris on a visit to Communist Russia.

http://www.amazon.com/Game-Over-Press-Start-Continue/dp/0966961706/ref=sr_1_1?s=books&ie=UTF8&qid=1295675587&sr=1-1 

Looking more for a book on Videogame violence that is unbias 

OK, then.

How about this?

http://www.amazon.com/Violent-Video-Effects-Children-Adolescents/dp/0195309839 

Make sure to scroll through the "Also bought" section.

There are several books there that look as though they may fit your subject.

Thank you Tommy 

This may be out of left field, but there's a book called "On Killing", by Dr David Grossman that studies the psychology,  training and condition that the US military uses on its soldiers. In portions of the book he talks specifically about the use of video games and related stuff for operant conditioning.

I was trying to remember the book that i wanted and it was "Grand Theft Childhood" because i herd that it wasn't biased and use hard facts to support it's data

While it's not about the media, "Final Fantasy and Philosophy" was quite good. It was broken down quite well with chapers on things like: "Kefka, Nietzsche, Foucault: Madness and Nihilism" and "Human, All Too Human: Cloud's Existential Quest for Authenticity"

They actually have a whole series of "<insert pop-culture> and Philosophy" books. A few I'm planning on getting: Batman, Terminator, Family Guy, and Battlestar