CK.91 -> WB1.11r3 (briefly played WB2.0r1)...
I saw WB go from very well rendered rolling terrain (Confirmed Kill engine), to the flat low poly count terrains with ground clutter, back to very nicely done rolling terrain but didn't have some of the more interesting features of the CK engine.
Anyone remember (I don't remember where), the elevated canyon v.91 and previous?
Some cool fights were in there. And CK had factories, I remember those- they never made it over to WB though. (of course, they didn't do anything in CK either)
-SW