We're sitting here in a doomed city with some kind of alien invaders all around us and we don't know what they look like.

Learn about alien invaders, the problems they cause, what's being done and how you can help.

And the threat to native species from alien invaders is growing, the experts warned.

So the human race moved up to our future and the alien invaders came.

And we know what most races think about alien invaders.

Seventy years later, the alien invaders return to finish the attack.

They are alien invaders, to be resisted and rooted out.

The game takes place in a fictional 2007 where the Earth has been conquered by alien invaders.

I know they're hard to get rid of, but are they also the latest alien invader?