Total Annihilation: Kingdoms under Virtual PC
I do not like this game. It's funny - cause I like the original Total Annihilation a lot (as discussed here) - but I just don't like this game. TA: Kingdoms uses exactly the same engine as the original game, with different skins and a different story line. But the nice looking mechanical animation of the robots in Total Annihilation looks more like bad puppetry of the human characters in TA: Kingdoms. Also, while the camera angle used worked great for tanks it is really bad for infantry (is that an archer? I don't know I can only see his head and shoulders).
As it uses the same engine as Total Annihilation it runs just fine under Virtual PC. I picked up my copy of this game for $2 at Frys a year or two ago - and I believe that you can still find it floating around in bargain bins if you really want it.