They have to try to subvert countries, gather resources, research new technologies/alien types, and your actions can affect their ability to do this. There are hundreds of changes, but the gist of it is: the aliens turn into a strategic faction with its own tools and goals.
Here’s the wiki and a few articles about it. It’s a mod that redesigns the whole game for significantly more strategic depth. I played a normal/ironman mode through the new content - and I like it, solid expansion.īut I wanted something deeper. Someone grabbed me the XCOM expansion Enemy Within for Christmas, so I’ve got back into the game.
