zombie84 said:

Prometheus is not an Alien prequel. It's not the same type of film, and there is pretty scant evidence outside of Weyland to even suggest it is in the same universe, so if you like Alien you won't necessarily like this.

I have to disagree. It's obviously an Alien prequel: set design, Weyland, the ring ship, the engineer climbing into the navigation chair seen in Alien. They all obviously point to this being a prequel.

Judged as a prequel (and without the benefit of any questions that may get answered in Prometheus 2), I think most will agree that it failed.

But as a standalone movie, it was pretty good.