Steampunk
One of the genres of SF, it is also a subgenre of alternative history that assumes "what if there was 21st century level technology or higher in the 1819th century?". Unlike cyberpunk, it uses classic mechanical devices such as steam engines, but the technology itself is over technology. In short, it can be summarized as "a meeting of the past background and future technology".
*Works: Fallout 3, Howl's Moving Castle, Netflix Love, Death + Robot (Love, Death + Robot) EP 8 Good Hunting
 
Dieselpunk
A genre that started with the idea of "What if we looked at a slightly closer past than the steampunk worldview?". It reflects everything that reflects the era from the 1920s to the 1950s, the golden age of the United States.
*Works: Bioshock, Machinarium
 
Atompunk
Based on the US around the 1940s and 1960s.
 
Cyberpunk
SF genre that mainly deals with the near future.
*Works: Cyberpunk 2077, Ghost in the Shell, Gattaca (Superior Gene), Equals (Emotional Equalizer), Minority Report (Crime Prediction Technology), Equilibrium (Emotional Control), Matrix (Virtual Reality), Blade Runner, Alien, Cloverfield 10 (Thriller), Last Days on Mars (Mars Zombie), Martian, Gravity *Other nanotechnologies deal with Nanopunk, biology deals with Biopunk, Ribopunk Ribofunk (Ribosomes, and further, genetic engineering symbolized by the Genome Project and cloning, a subgenre of cyberpunk), Time Travel (Time Slip/ Movie Benjamin Button's Time Runs Backwards, Eleven O'Clock)
 
Slipstream
Compatibility with SF and fantasy genres. SF works written by non-SF writers.
*Major authors: Lucius Shepard, Connie Willis, Walter John Williams, Ray Bradbury, Ursula K. Le Guin, Kurt Vonnegut.
 
Individualistic SF
Single protagonist, closed space, a situation already melting in the SF environment.
*Works: First Man (Documentary), Triangle (Afterlife-Self Division-Trapped in Memory), Edge of Tomorrow (Back to Before Death), ARQ, Discovery (Resurrection of Post-Human), Eternal Sunshine (Memory Deletion for a Broken Lover)
 
Post apocalypse
After the destruction. A subgenre of science fiction that deals with the theme of the end of the world.  Apocalypse is a genre that depicts the destruction of civilization and humanity through a massive disaster such as a large-scale war, a large-scale natural disaster, a large-scale epidemic, or a supernatural event, or a genre that depicts the world after civilization has been destroyed.
*Works: Fallout, Players Unknown Battle Ground, Train to Busan, The Mist, The Walking Dead, I Am Legend, The World of the Blind
 
Space Opera
An adventure that unfolds in space, epic-style SF novel. It can be translated as "Space Epic" in Korean. In fact, the name itself is a non-name, meaning Space + Drama (Space + Soap Opera). This genre, which began with this non-designation, later led to the publication of a novel titled "Space Opera," and the emergence of titles such as "Star Wars" and "Star Trek," leading to a reversal of image.
*Works: Doctor Who, Marvel Comics. Guardians of the Galaxy, Star Trek, Avatar