First off you got to remember that Alien was made in a time when movies dident have all these computers to do the work. So everything you see in Alien is eather a miniture or a man in a costume. And a bunch of props and I can say they did an extrodinary job. Now Alien 3 was the earliest movie to introduce a type of computer animation. That one is rather different from the first two. Its rather disturbing how the Alien pregnates the dog in Alien 3. Its very wierd but sweet. The Rot wiler is like paceing back and forth as he just burst open and a sort of bull type Alien emerges.
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