Strikeforce: Morituri is an often overlooked classic of the late 80s. Half of the series was written by Peter Gillis (probably most known for his bizarre runs on Defenders and Dr. Strange) and the other half by James Hudnall (probably best known for his work on Alpha Flight and some assorted Ultraverse titles, if anyone remembers those anymore), both of whom are often overlooked classics of the 80s themselves (also noteworthy is that the later 1/3 of the story contains some of Mark Bagley’s earliest work). While it was published by Marvel, it was not part of their regular superhero universe. This was a story of an Earth without superheroes which was being invaded by aliens. Aliens called The Horde, who incidentally had balls for chins.