The aliens are definitely a wild card.
That's what guns are for.
The aliens are definitely a wild card.
You suggest Pioneering for internal trade routes, right? (which seems to give huge boon to both cities) But how often they are attacked by aliens? Is building trade units before Ultrasonic fence a good idea?If you're going for a fast expand, then take the free Settler first, and go back for the worker later.
also, Pioneering should be your 2nd tech to research (first if you really want to do it, but I'd go Chemistry first).
How about some unoccupied land where some random aliens wander(but no alien nests) or sea trade route where sea dragons continuously visits?Well, I wouldn't send a trade route near a nest if that's what you're asking.
I love the focus in the discussion on peaceful expansion and rapid build-up of infrastructure. The only thing I see as being absent is the wild card of aliens, not to mention competing colonies...but mostly the aliens.
Even if one pursues a relatively passive and deferential stance towards the aliens, they are after all wild animals and can be expected to behave in ways that are in their own best interests and not in that of the invading colonists.
So the sugestions so far are wonderful but, apart from mentioning the occasional soldier or two, they almost completely discount the potential havoc that a nearby nest can cause the colony's expansion plans.
Just sayin...because I too am a relative peacenik in Civ, but this planet may require one to have a big stick to carry around for those times when a friendly wave and a cracker tossed at the passing Siege Worm won't be enough. So my plans are going to include some industrial capacity set aside to build up a military sufficient to deal with an unexpectedly hostile alien threat. Naturally, I will also build whatever buildings/fences that I need to help cope with it as well. But IMO it can't only be just about best case scenario planning.