K-Dramas like Nightmare

12 shows with a similar feel

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  Signal (2016)Also crime · mystery · sci-fi & fantasy

  
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.

  5 tracking it here
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  The Judge Returns (2026)Also crime · sci-fi & fantasy

  The return of corrupt judge Lee Han-young, who was a slave to a large law firm, to the past 10 years ago. He makes new choices to punish evil and implement justice.

  6 tracking it here
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  Connect (2022)Also mystery · crime · sci-fi & fantasy

  Dongsoo leads a solitary life, spending his time uploading music to the internet. His ordinary life is upended when he is kidnapped by an organ hunter, who takes out one of his eyes. Soon, Dongsoo is sharing the vision of someone who got his eye. Through the connected vision, he learns that the taker is a notorious serial killer, and pursues the murderer to get his eye back.

  3 tracking it here
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  Zenonzard: The Animation (2020)Also sci-fi & fantasy

  The year 20XX. Humans called "Concords" and ultra-high-performance AI called "Codemen" team up as partners to compete in the card battle game ZENONZARD. People are going wild with excitement at the world championships, THE ZENON. One day, Souta Azuma, an average high school student, is challenged to a battle by a mysterious woman, Eilietta Lash. She reveals that she’s a Codeman and that her intent is to team up with Souta and participate in THE ZENON. Souta reluctantly agrees. Souta and Eilietta’s first opponent turns out to be the super-famous player Shion Saionji, who attends Souta’s school, and her partner, Ash Claude.
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  PLUTO (2023)Also sci-fi & fantasy · mystery · crime

  When the world's seven most advanced robots and their human allies are murdered one by one, Inspector Gesicht soon discovers that he's also in danger.
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  Finding Soul (2016)Also sci-fi & fantasy · mystery

  High school students Xia Changan (Wang Junkai), Sui Yu (Wang Yuan), and Chen Haoxuan (Yi Yang Qianxi) all have a different motive to try to find an A.I. placed on campus that surpassed the Turing test.
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  Last One Standing (2019)Also mystery

  Luo Ran has been investigating the death of his wife with his best friend Ning Yu. They end up getting onto a train headed for C City in order to chase female suspect Jiang Xue. The train suddenly derails mid-journey, and the hundred or so survivors find themselves transported to a ruined city with no living soul in sight, cut off from the rest of the world. The city is filled with dangers on all sides and supplies are dwindling. The survivors start dying off or disappearing one by one—a brutal game of survival begins.
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  Terminator Zero (2024)Also sci-fi & fantasy

  A warrior from a post-apocalyptic future travels to 1997 to protect an AI scientist being hunted by an unfeeling — and indestructible — cyborg.
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  A War between Humans and AI (2024)Also sci-fi & fantasy

  On an unknown continent, there is a city called Satellite City No. 9. In this city, a screw straightening worker named Rui Li at the screw factory gradually realizes the unreality of the city in her monotonous daily work. With the help of a mysterious character named "Anull", Rui Li gains the superpower of "transformation" and becomes the thief "Sirius", secretly taking action to escape from here. When the truth of the world finally unfolds before her eyes, Rui Li discovers that her real battle has just begun.
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  Ergo Proxy (2006)Also mystery · sci-fi & fantasy

  Thousands of years after Earth’s atmosphere was destroyed, adventure blooms in the strangest of places. The domed city of Romdo is supposed to be perfect, but Re-l Mayer, a young female inspector from the Civilian Intelligence Office, knows better. In this place where humans and robots coexist, she receives a strange message: something is awakening!
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  Anonymous Signal (2025)Also crime

  Former friends Kwok Pak-fei, Keung Hei-man, and Lau Lik reunite years after a botched operation led to a tragic death and estrangement. Now, a gruesome murder case tied to a human trafficking ring forces them to work together. As they investigate, mysterious messages appear with clues about the crimes, hinting at knowledge from the future. Together, they form a special unit, ASIB, to decode these messages and solve the chilling case.
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  Time of Eve (2008)Also sci-fi & fantasy

  The future, probably Japan. Robots have long been put into practical use, and androids have just come into use. Influenced by the Robot Ethics Committee, it's become common sense for people to treat androids like household appliances. Their appearance – indistinguishable from humans except for the ring over each android's head – has led some people to empathize unnecessarily with androids. Known as "android-holics", such people have become a social problem. Rikuo, a high school student, has been taught from childhood that androids are not to be viewed as humans, and has always used them as convenient tools. One day, Rikuo discovers some strange data in the behavior records of his family's household android, Sammy. Rikuo and his friend Masaki trace Sammy's movements, only to discover a mysterious café that features a house rule that "humans and robots are to be treated the same".