With Halloween fast approaching, EW is picking the five best films in a variety of different horror movie categories. Each day, we’ll post our top picks from one specific group—say, vampire movies or slasher flicks—and give you the chance to vote on which is your favorite. On Oct. 31, EW will reveal your top choices. Today, we’re ready to talk about some extraterrestrial horrors.
In space, no one can hear you scream. But on Earth, aliens have been making film audiences hoarse for decades. Sure, there are plenty of friendly, E.T.-esque extraterrestrials—but more often than not, these beings from another planet seem intent on destroying mankind.
Aliens make such ideal villains in horror films because of their inherent unfamiliarity. When they attack, it’s often with superior and unknown forces that humans have no idea how to defend against. So while we continue to wait for concrete signs of alien life outside the fences of Area 51, filmmakers have made sure to warn us that what lies out there likely has little intention of coming in peace.