I browsed the site a little but couldn't find a section for the rules of the game. So :
How it is played ? Passing savegames around the players I assume, but how are the battles resolved ? What about diplomacy & alliances ? Are there time limits for a player to make his turn ? Anything else we should know

Would you be so kind to post a link or better, a brief description of the rules and mechanics. I know how hotseat works, but never tried it and don't have any idea how this will work with several other people over the internet. Could you enlighten someone who has seen almost exclusively the single player side of things (except for LAN battles...) ?