Mr. Tact wrote: Mon Mar 04, 2019 1:52 pm If you are playing a rail world map shouldn't expansion be turned off? Or did you turn it on?

yes, i have turned that on.
i have no problem with the alien expansion - my outposts are prepared - just the railways to the outposts are a problem.

OK, thanks for all the suggestions.
Clear and box all of the territory where my trains go would be a huge undertaking. i will need thousands and thousands of turrets and walls - just to protect my power poles...
the good thing is that it will be safe inside the borders.

to produce independent power ...

i have a very annoying problem with the biters always eating my big power poles along the railway.
This happens very regularly when they start an attack in bulk, then 1 biter get stuck by a power pole, he starts attacking it until its gone - and it doesn't matter if the way is free 1-2 seconds later ...