Cuz that's a lot of work!
I've had to put the overlord game/experiment on a back burner after a month of game-time has passed - it's a shame because some neat things were going down, and I think that it's a viable medium - provided the GM has done enough prep. I don't think I did nearly enough of that - but more importantly, the scale was too large* and too small**.
* Most of the players were geographically separated by many miles from each-other, so there was little direct interaction - though that did allow for some widely divergent 'cultures' being generated in relative isolation.
** The granularity of 'powerful NPCs' is wonky - particularly in the two Free Cities. Councilmembers, Guild leaders, Tyrants, Lord Protectors, etc - a detailed city would itself be an interesting setting for the machinations of the 'overlords' that called it home.
The whole thing is something worth trying again - but I just can't sustain it for the time being. Too much going on in real life and too-many open ended gaming projects lying around needing attention - it is something I want to return to after I've cleared the deck a bit and can give more attention to. I'll collect the details in the near future and post them up - there was some really amazing stuff being created by the players.
In the meantime, I have this large tribe of goblins (95 of them, +10 leaders & assistants that fight like orcs!!!) living in caves nearby. I've put them in my thrall and I'd like to send some of them to raid your villages tonight - a band of 40 + 4 leaders. What forces are present there to defend?