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.

One of the underrated cult sci-fi movies of the 1990s had a moment that owes its existence to the first Alien movie, according to that film’s director. Ridley Scott released Alien in 1979, and it has ...

The Xenomorph from the Alien film franchise is one of the coolest, most nefarious movie monsters ever hatched, with its acid blood, mouths-within-mouths, and diabolical claws. It pretty much ...

The Predator franchise has more than a few fun entries, but even the best ones may not be the most rewatchable.