While this movie may be a decent film in itself, it cannot even be compared to the others in the series. I am an extreme Aliens fan and I was very disappointed by this movie. The creature in this one is supposed to move and act differently (since this time it is born from an animal and thus has animal like qualities) but the computer generated parts are totally obvious and unrealistic. It also does not adhere to the story: aliens do not have eyes, so then why are there scenes shot as if seen through the eyes of the creature? I don't hate this because it lacks guns and marines and stuff like that, i hate it because it was carelessly thrown together. i think someone who had a truer passion for the story of the Alien should have been in charge of this one. But by contrast, the series is SAVED (yes, SAVED) by the 4th movie. Anyone who says the 4th one sucked is obviously not a true Aliens fan. sorry