That depends on what you want out of the movie. If you are expecting a Alien prequel or to have your questions answered from the first movie you will probably be disappointed in it. Its best to view the movie as itself and not so much the films before it. Besides that though the movie did have a few flaws too and the movies expects you to fill in the questions yourself but I still really enjoyed the movie because of the outstanding visuals, it had some good main characters, the movie was well paced and the atmosphere was engrossing. So in short I would say at least rent it and see if you like it or not.