If your search for "5.5 / 10" was a typo and you actually want top-tier "10/10" recommendations, experts and readers on Reddit and Goodreads suggest:
: Earth is devastated by four waves of increasingly deadly attacks. Cassie is on the run to save her younger brother while preparing for the inevitable "Fifth Wave". 5.5 / 10 Sci-FiThri...
: The survivors face the "Others" in a test of the human spirit as the situation becomes even more dire. If your search for "5
by Van Ris : A newer sci-fi thriller available on Amazon Kindle . by Van Ris : A newer sci-fi thriller
: Available at Amazon , this collection includes mid-range rated cult films like The Monolith Monsters and The Mole People . Recommended "10/10" Sci-Fi Thrillers
: Often included in sci-fi thriller lists on IMDb , this film features a world where vampires have taken over and humans are farmed for blood; it holds a 6.4/10 but frequently appears alongside lower-rated cult classics.