From the dawn of cinema, the science fiction genre has captured the imaginations of filmmakers and the audiences they’ve served. From Georges Méliès to Fritz Lang, Robert Wise to Ridley Scott, sci-fi movies have pondered humanity’s fear of the unknown and the beyond, casting sometimes bleak, sometimes exciting visions of the future. If you’re a Prime Video subscriber and a science-fiction nut, there are some worthy options to stream on the service. Whether it’s sci-fi horror, action, comedy, or post-apocalyptic/dystopian sci-fi, there’s something for everyone. Here’s our list of flicks every sci-fi geek ought to have on their watchlist, some great, some putrid, some stuck in the middle but conceptually deft.