The phrase refers to collections of highly-rated science fiction films, as determined by users on the social media platform, Reddit. These lists emerge from discussions, polls, and aggregated user opinions within various subreddits dedicated to cinema and science fiction specifically. For example, a user might search for recommendations and receive a curated list based on community upvotes and comments.
Such user-generated compilations offer a valuable alternative to traditional critical reviews and commercially driven lists. They provide a broader, more democratic representation of audience preferences, highlighting both popular and niche titles. Furthermore, the conversational nature of Reddit allows for context and justification for film choices, providing deeper insight than a simple ranking.