Stronghold Kingdoms is an online RTS where you can uhh...rule peasants or some such.
There's a guide on how to play the game here:
Anyways it's pretty much the world's slowest online RTS, but the redeeming feature seems to be that there are politics involved. You rule a tiny realm and rise in the ranks and eventually you can join a faction which is a portion of a house and try to conquer the realm. Even from the beginning you can rule a county by gaining the votes of the villages in the local area.
I think the most entertaining part for me so far is that I took control of my county that was unattended and run both my village and the local parish. I invaded a neighbor's parish today for resources necessary to future success of my county and in return received a few angry words by messenger. I like that there are actions that require an element of risk or diplomacy. It just seems the only diplomacy I know is setting fire to someone's castle and taking their stuff.
I'm in World 3 in the county of Droitwich if anyone feels like joining. I'm too low level at the moment but soon maybe I can make a GWJ faction if there's enough interest.