[MaxWilson]

Yeah, but most generic roleplaying systems don't have an AI attached to a huge world simulator. I really like this idea.

On reflection, I think you'd probably want to have a "DM" nation that starts with a province with no connections to anybody else, all spells pre-researched, maybe a couple of miscellaneous nation-specific spell (Soul Slay on Steroids) to e.g. kill off the giant commander when necessary, etc. If there were a way to mod Eyes of God to show units that would be good, otherwise you'll have to have cheap summonable, stealthy units that can Teleport or Cloud Trapeze to all the provinces on the map, in case you need to know what is where.

-Max