- STEAMPUNK: Steampunk depicts an alternate world stuck in the Victorian Era of Britain and United States but with advanced technology powered by steam. This genre is more about adhering to style than plot, and features lots of blimps, googles, gears, top hats, and Victorian slang. The popularity of steampunk as led to other subgenres like dieselpunk (based on 1950s American greaser culture), atomicpunk (based on '50s and '60s science fiction aesthetic), and cyberpunk (based on the internet age and biological enhancements).
- SCIENCE FANTASY: As discussed in the main article, science fantasy is a fantasy story that uses gods and magic as well as science and technology. Science fiction also often crosses with western; popular science westerns include Westworld and The Dark Tower series.
- MUNDANE SCI FI: These stories are set in the near future where things aren't much different. The trope of "if this continues" still works, just on a smaller scale. Good examples of this subgenre are Bicentennial Man, which follows the life of a android servant slowly becoming a legal human, and Robot and Frank, where a former bank robber uses his personal assistant bot to help him pull one last heist.
- POST-APOCALYPTIC: Arguably the most popular subgenre of science fiction is the post-apocalyptic genre. While this is not the Biblical apocalypse (angels and demons are fantasy), this is a dystopian subgenre where a disaster or war has destroyed our current society and the story looks at survivors struggling in a world of anarchy (Mad Max: Fury Road, The Road, Fallout) or a world of a new oppressive society (The Hunger Games, Planet of the Apes, The Time Machine).
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Star Wars: The Phantom Menace. Directed by George Lucas, featuring Natalie Portman and Ewan McGregor. Twentieth Century Fox, 1999.
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