All four Alien films (discarding the unfortunate Prometheus film which, despite its flaws, does shed a nice light on the Alien mythology) work in their own way. As an imdb reviewer put it:
- Alien: horror
- Aliens: terror
- Alien 3: tragedy
- Alien Resurrection: satire
If one appreciates the qualities of the films for what they are, then it is possible to enjoy the entire series as opposed to merely the first two films which, of course, deserve their classic status.