As Stardock has said the multiplayer community for Galactic Civilizations III is minimal. Part of this is Galactic Civilizations has always been a single player game with great AI. Part of it is the sandbox game that is Galactic Civilizations III takes many hours to complete. So first off in order to do a quick game several things would need to be modified in order for it to work. Here are my suggestions on how to implement this for a quick 30-60 minutes.
Game Setup (Must)
- Tiny Map
- 2-8 Players
- Turn Timer 30-60 seconds
- Home System only in game for each player
- Only Ships on start-up (to help minimize turn time)
- Constructor (instead of colony ship)
- Survey Ship
- No exploration ship
- Game Speed Very Fast
- Tech Very Fast
- No Diplomacy (This Is WAR!!!)
- No Ship Designer (however, ones previously saved ships would be available)
- No Combat Viewer.
- Adjustable Settings (Via Lobby if lobby available)
- Anomalies
- Resources
- Trade Resources
- AI
- Mercenaries On/Off
I think if theses settings were implemented in a Quick Multiplayer Game option on the main screen and it just searched for first available games. (Maybe gives options 1 vs 1, 4 player free for all, and if enough interest 8 player free for all).