Nice job.  I haven't been able to break 27 minutes.
I don't think I can and still treat this as an "idle" game.

Very nice classic war game.  
Hardest game is, I think, Smaloe map with player playing blue, and AI playing yellow and magenta.

I'd like a harder map, but I think I'm just a glutton for punishment.

It would be nice to have a map editor, though.