Azelover on 29 November 2009
GoldenEye and Halo, Metroid Prime already did a lot that could be done.
There's a reason why Nintendo couldn't make a blue ocean 3D Mario(they tried it with Galaxy, check the Iwata Asks interviews).
A lot of people get dizzy, and it's that simple. In terms of FPS I'm not sure how that would work, there's a core problem that can't be solved easily.
