I should get back on that one, I loved playing it at the time (against CPU, never a fan of online play), just building layers of defenses and have a constant stream of CPU forces get destroyed against it.

The one I'm thinking of had early support for multi-core and multi-screen, with the minimap / overview on the other screen. But it was still constrained; would have loved to test that defense of mine against all 7 other CPU players on a big map. Might try it again on my newer system.