You've got concept art with a pinch of news this morning, as Superannuation points out the portfolio of Kiwi artist Christian MacNevin, which contains images from a pitch for an Altered Beast remake that Sega never picked up.
They're...interesting, to say the least, but I'm just as interested in MacNevin's other fantastic pieces for projects as diverse as PlayStation Home and panda robots.
You can see more of Christian's art at his personal site.
To see the larger pics in all their glory (or so you can save them as wallpaper), right-click on them below and select "open in new tab".