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Top 20 Sci-Fi TV Shows on Ad-supported 2026
Discover the best Sci-Fi TV Shows on Ad-supported, ranked by real community votes. Use the filters to narrow results by status, runtime and streaming availability.
How are the series charts created?
Rankings are based on real user ratings. The more votes a show receives, the more stable its chart position. When you rate shows yourself, your personal recommendations improve too.
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Series Charts: Top 20
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Why these charts are worth it
Sci-Fi TV shows are the genre most driven by a single core question: what if? What if AI becomes conscious? What if we colonise other planets? What if time travel is possible but comes with unexpected costs? The best science fiction uses these premises not as an end in themselves, but as a lens through which current social, ethical or technological questions can be examined differently.
This ranking covers sci-fi series across a broad spectrum: hard science fiction with high technical ambition, space opera with epic interstellar scenarios, dystopian series, time travel stories and near-future concepts that are only a small step removed from the present. Series that deliver on both dimensions – compelling story and substantive ideas – consistently rank at the top of the community charts. Use the streaming filter to see immediately where each series is currently available.
Discover related charts
If sci-fi TV shows are your thing, you might also enjoy fantasy or thriller series for similarly imaginative or tense storytelling.
FAQ
What are the best Sci-Fi TV Shows?
The top Sci-Fi TV Shows are ranked by real community votes. The more ratings a show has, the more stable its position.
Where can I stream Sci-Fi TV Shows?
Use the streaming filter to see which Sci-Fi TV Shows are available on Netflix, Prime Video, Disney+, HBO Max and more.
How are the Sci-Fi TV Shows rankings created?
Rankings are based on real user ratings. The more votes a series receives, the more stable its chart position.