A true classic. Its a must see movie for sure. The story is awsome and the alien coming out of the stomach was just wicked. No matter what you have to see this movie because every thing about it is perfect!

Filmmakers, listen... if you want to make a horror film and want to know how to pace and give the audience the chills... Watch this now... then again...

This is a textbook example of how these things should be made and almost never is.

The setting and atmosphere is amazing, and it holds up even to this day. It also has some very memorable scenes, and the acting and chemistry between the actors feel very natural and their performances are very believable. Sadly it also feels like...
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The setting and atmosphere is amazing, and it holds up even to this day. It also has some very memorable scenes, and the acting and chemistry between the actors feel very natural and their performances are very believable. Sadly it also feels like the movie doesn't really play out any psychological scares (being trapped in a space ship with a monster on board should be enough you would think) but instead resort to cheap scares like many other horror movies such as the "oh, it was just the cat"-cliche... I guess what I'm saying is this movie didn't need to resort to such and would be much better without them. My biggest gripe with the movie is that I knew exactly what was going to happen, and foresee the twists and turns. But I'm not sure I can blame the movie for that because I don't know if this is in the nature of the movie, or because I saw the other movies in the series prior to this one. I heard very good things about this movie so I saved it for last: and that might have been a mistake. I was originally going to give this movie a 3, but when I take into considderation that this is the first movie, not the 5th or however many we're up to now, I pretty much have to recommend this movie. You should totally check it out - and if you do, try not to spoil it by watching the other movies first.

This movie set a bar that just doesn't seem to ever get crossed. 29 years old and counting and no one has come close except for James Cameron in the sequel. How is that possible. Well done Ridley Scott.

Must see for anyone.