A very old flash defense game with a walking/strutting robot on the main menu

I remember this game every few years, search frantically for days and never find it, then forget about it. I did find it one time, but for whatever reason I lost the name. This game is from a time where the "defense" genre wasn't well developed, at least from what I could tell/remember, most games like this were categorized as "strategy". I've been searching lazily for weeks this time around and it seems my chances of finding it are worsening as newer games with similar themes dominate google.

Platform: PC

Genre: Flash defense/strategy

Estimated year of release: Mid 2000's, maybe a little earlier

Graphics/art style: Isometric, decent art for the time period

Notable characters: On the main menu there is a wireframe robot doing some kind of walk, almost like a strut. If I remember properly, it looked like ED-209 from robocop, with a head or control unit on top of a pair of legs, guns for arms, no torso.

Notable gameplay mechanics: Your buildings start in the top left corner, enemies always come from the bottom right. There were a lot of blank tiles, desert-looking. You could build more buildings on them and upgrade your other buildings.

Other details: Heavy military theme. I might be wrong about this, but the buildings started off looking like ww2 era, then gradually progressing to more futuristic looking.