The decade saw the rise of riskier, more transgressive, and far more original and experimental sci-fi movies. Some of them have gone down in history as underappreciated cult classics, such as Mothra ...

From dystopian nightmares to space adventures, science fiction has given us some truly mind-blowing cinematic experiences!

IMDb users can be a finicky bunch, but if you're curious about what they deem the best sci-fi movies of all time, here's the rundown.