Rafiki wrote:ARES (distributed with NCP, not sure about the availability for AACW and BoA players) makes things a good deal easier.
Hotseat is quite possible already; simply do "PBEM" on a single computer
Not quite sure exactly what ARES stand for, so a quick dash to Google tells me it is either:
1) A P2P program.
2) A NASA launch vehicle.
3) Amateur Radio Emergency Service.
4) American Real Estate Society.
My unqualified guess would be 1, but I hope for 2!
If it is 1 then more information is here:
http://en.wikipedia.org/wiki/Ares_Galaxy
Oddly enough work on it stopped in 2007.