Top 10 Scariest Sci-fi Movies

When we think of Sci-Fi we think of Star Wars and computers etc. But Sci Fi does have a dark side to it, here is the list of Scariest Sci-Fi films of all time!
The Top Ten
1 Alien Alien Product Image

Cursed me with insomniac and nightmares for weeks, and whenever the name "alien" is mentioned, my little kid-scary-first-encounter's memories return.

By far the scariest Sci-Fi movie ever made - scary locations, scary monster's look, scary score. Brilliant acting from the whole cast made it look even more impressive

In its day the most unique movie ever made, a great combination of space, horror, suspense and drama.

Both Alien and Aliens are outstanding movies. I saw Aliens first and I just might like it better.

2 The Thing The Thing Product Image

All of the other sci-fi movies on this list are AMAZING, but none with the psychological, gut-ripping, gory, horrifying, suspenseful terror that The Thing provides for you.

I go back and fourth between this and Alien being the greatest horror movie of all time...but this one wins out.

I'm a huge sci-fi/horror fan and I've seen most of these movies, but the thing is by far the scariest.

Easily number 1. Scarier than Alien!

3 Aliens Aliens  Product Image

Laugh out loud, the alien series in general is the best sci-fi ever! Predator sucks and is the only franchise coming to mind which I would like to discredit. All other sci-fi's are awesome though. Xenomorphs rule! They look great and have awesome abilities which, in my opinion, ranks them at the top of the evil alien list

What James Cameron does to make this terrifying is make you become emotionally invested in its two lead characters, (Ellen Ripley and Newt) and put these characters in dangerous circumstances with Xenomorphs, which are crazy as hell.

Aliens is a great movie but it should be no. 10 cause its not scary at all I think the thing is the scariest and alien ressurection is the most disgusting and alien 3 also and alien is the scariest.

Alien was a lot scarier, you had no idea what the creature was, the crew wasnt prepared, and the overall atmosphere and tone was a lot freakier. this movie was great as well, but FAR from scary.

4 Predator Predator Product Image

Predator is my favorite Sci Fi/Action movie of all time, a solid performance by Arnie, great action, horror and plot twist, not to mention excellent score and endlessly memorable quotes.

Yeah, the aliens in Alien are friggen scary. But Predator is more advanced and carry awesome guns and knives!

How is this scary? I was 12 when I saw it, no fright!

Could you wish for a more iconic creature?

5 28 Days Later 28 Days Later Product Image
6 I Am Legend I Am Legend Product Image

It was one of the best movies I've seen in a while.

7 Cloverfield Cloverfield Product Image

You know even though we have problems with terrorists, it would be better and awesome if there's a real-life monster wrecking havoc in our country instead!

Not in the least enjoyable, although Goodman is great, as always

8 Signs Signs Product Image

Oh my gosh freakiest alien movie ever, watched it before I went to sleep and couldn't stop thinking about the scene were bow says to her dad there's a monster outside and there's like a massive, buff, glaring figure like an impersonation of the devil and also the 7 year old birthday in Brazil on T.V. If that was shown o actual T.V. people all over the world would be crappin their pants honestly brilliant but damn creepy. God bless all who watch.

One of the most creepiest movies you will ever see epsessally where you see the alien on the roof!

My papaw showed me this at 4 years old I still can't get over it.

That scene at night in the cornfield... You know the one.

9 Event Horizon Event Horizon Product Image

This should be No1. Not just the scariest SciFi movie, one of the scariest movies of any genre.

Sickness at its finest

I shat myself :/

10 The Fly The Fly Product Image
The Contenders
11 Jacob's Ladder Jacob's Ladder Product Image
12 Invasion of the Body Snatchers (1978) Invasion of the Body Snatchers (1978) Product Image
13 The Terminator The Terminator Product Image
14 The Mist The Mist Product Image
15 Jurassic Park Jurassic Park Product Image
16 28 Weeks Later 28 Weeks Later Product Image
17 They Live They Live Product Image

You guys should watch this movie - real masterpiece from Carpenter. And enough creepy

18 The Day the Earth Stood Still (1951) The Day the Earth Stood Still (1951) Product Image

Excellent. They do not make them like that anymore

19 War of the Worlds War of the Worlds Product Image

This movie should be THE SCARIEST Sci-Fi Movie Ever. It had me at the edge of my seat for the first 45 minutes. And the rest of the time I was riveted. Except for the Tim Robbins crap scenes.

Not scary. But it is my favorite movie of all time. But it would be SO SCARY if this was in real life.

20 The Cell The Cell Product Image
21 The Descent The Descent Product Image
22 Christine Christine Product Image
23 Alien 3 Alien 3 Product Image

Not the best alien film the best alien films are alien, alien 2, alien 4 and Prometheus

24 Jurassic Park III Jurassic Park III Product Image
25 Hollow Man Hollow Man Product Image
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