Thematically heavier? The beginning is about an alien race of psychic cephalopods who reproduces like Xenomorphs (minus the rape imagery) invading earth.
A motile sperm with teeth violating your eyeball is pretty rapey. Just sayin'
This is all because of the lack of day/night cycle giving a false impression. Other people have said it but when you tally up the themes this game is about as dark as you can get.
