Work in progress. Aliens now have nasty infestation (base-game tiles with a purple tint) that destroys everything in its path. Only water and player-made hard surfaces (bricks/concrete) can stop its spread.
I like the idea, but please some sort of a machine which reduces it to fight against it.
Or make it work like in starcraft 2, where you have to kill all alien buildings to proceed.
Cause with other mods installed which reduce the progression, its really hard.
