I always enjoyed playing one-city challenge on Civ, so here's a Galactic Civ version:
Two planet Challenge:
- Medium map, five opponents, default settings (planets common, habitable planets occasional), Tough AI, No tech trading/brokering.
- No building of colony ships (no upgrading other ships into colony ships).
- No precursor ruin bonus tiles on either two starting planets. All other bonuses are OK
