Must See Sci-Fi Movies You Probably Haven’t Seen

This was a hard list to make. I had trouble deciding what sci-fi films qualified as underseen/underrated/overlooked. So I feel like there's a lot on here that people will consider too well known to suit the name of the list, and also maybe a lot of films that people will think are missing. For the moment I've erred on the side of creating an inclusive list, but I might pare it down in the future.

This list is in chrono-alphabetical order, so it is not ranked, although you can sort them by my rating to get a general idea of how highly I value them.

See also: my Must-See Horror Movies You Probably Haven’t Seen list

  • Woman in the Moon
  • Dr. Jekyll and Mr. Hyde
  • Island of Lost Souls
  • The Invisible Man
  • The Tunnel
  • Things to Come
  • The Thing from Another World
  • Invaders from Mars
  • It Came from Outer Space
  • The War of the Worlds
  • Forbidden Planet
  • Invasion of the Body Snatchers
  • The Incredible Shrinking Man
  • The Blob
  • The Fly
  • On the Beach
  • The Time Machine
  • La Jetée
  • Planet of Storms
  • Ikarie XB 1
  • Robinson Crusoe on Mars
  • Alphaville
  • Planet of the Vampires
  • The War Game
  • The Creatures
  • The Face of Another
  • Fahrenheit 451
  • Seconds
  • Quatermass and the Pit
  • Charly
  • Solaris
  • Colossus: The Forbin Project
  • No Blade of Grass
  • The Andromeda Strain
  • The Omega Man
  • The Asphyx
  • Silent Running
  • Slaughterhouse-Five
  • Solaris
  • Z.P.G.
  • A Cold Night's Death
  • The Crazies
  • Fantastic Planet
  • Idaho Transfer
  • Soylent Green
  • Westworld
  • World on a Wire
  • Phase IV
  • The Terminal Man
  • A Boy and His Dog
  • Death Race 2000
  • Girl from Starship Venus
  • Rollerball
  • Shivers
  • The Stepford Wives
  • Logan's Run
  • The Man Who Fell to Earth
  • Capricorn One
  • Demon Seed
  • The Boys from Brazil
  • Prophecy
  • Stalker
  • Time After Time
  • Altered States
  • Battle Beyond the Stars
  • Death Watch
  • The Final Countdown
  • Golem
  • Hangar 18
  • The Lathe of Heaven
  • Looker
  • Outland
  • Strange Behavior
  • Threshold
  • The War of the Worlds: Next Century
  • Android
  • Endangered Species
  • Brainstorm
  • The Day After
  • The Last Battle
  • Testament
  • 2010
  • Iceman
  • Nineteen Eighty-Four
  • The Philadelphia Experiment
  • Repo Man
  • Sexmission
  • The Testament of Professor Dowell
  • Threads
  • Enemy Mine
  • Lifeforce
  • O-Bi, O-Ba: The End of Civilization
  • The Quiet Earth
  • The Stuff
  • Warning Sign
  • Dead Man's Letters
  • Ga-ga: Glory to the Heroes
  • Invaders from Mars
  • Kin-dza-dza!
  • The Hidden