Working in game engine, objects are fine in 3d view, but once I start the game engine, object size has an inverse relationship to its material brightness. It's almost like there's a set amount of light each object reflects regardless of area, so larger objects are darker.
There's what I mean: The Below are three identical planes, with the same material. I actually took the first and duplicated it, changing nothing but the scaling.
It's not that the largest one is furthest from the lights, because the position the lights are directly on top of the middle one and it's still dark; also, there is no gradient, it just goes from one color to the next. (There's a little green to the inner plane.) Changing the Diffuse intensity does nothing; lowering Specular intensity gets rid of the white and makes the whole inner plane the light green of the upper right corner. Making it Shadeless (under Shading) results in uniformity, but of course no shade.
This seems too consistent to be a bug rather than a feature, so I figure I must be doing it wrong. But I checked the documentation, this site, Google in general, and I can't find it. Maybe I'm just not understanding the words.