Originally Posted by wolfing 
Bah, please no multiplayer! They're opening a Pandora box. Concentrate on finishing the game, polishing it, kill bugs, improving interface, whatever but NOT multiplayer. It's a entirely different can of worms.
I think they explain it reasonably well in their update:
http://www.kickstarter.com/projects/…r/posts/413666
It's just a hotseat / TCP-IP skirmish mode for tactical battles. I don't think that's much of a problem. Less extensive than Banner Sagas Factions, for sure.