I loved the new Alien movie, Aliens: Covenant. When I was raving about it at work, my co-worker sent me a pdf of the original script for Prometheus.
He said, “Did you ever read the screenplay that eventually become Prometheus? I think it’s a much better story and ties up quite a few (unnecessary) loose ends.”
He was right. While they kept a lot of elements from the original script, the first version was better. I recommend reading it if you like the Alien franchise. I found a copy of the script online. Reading it is nearly as good as seeing it on the screen.