The Genesis version seems to believe that nearly all Bomberman should be white. Racism?
They must really hate the blue Bomberman, for they deleted him from the title screen. I guess it would've raised too many questions if they'd left him in, since only four people could play, but that could've been down right funny. I can hear it now: "Hey, is that an unlockable character?" - "Damn straight, just press up, right, down, left, II at the title screen. What? You don't have a button II? Tough shit."
I agree, Mega Bomberman was a quick, half-baked port that could've looked a little better (it's still fun, though). The oddest looking thing for me is the half a block shift on the screen, as it just looks weird cutting off the top of the field and is too close to the status bar.