If You Miss The Silent Sea, These Top Best Korean Sci-Fi Series!

The Silent Sea was more than just a space mission.

It felt eerie, slow, and full of tension.

The silence wasn’t empty — it was full of fear, secrets, and grief.

That’s why it stood out.

If you still think about what was hiding on the moon base, you’re not alone.

Korean sci-fi doesn’t flood the screen. But when it hits, it leaves something behind.

Here are 12 top best Korean sci-fi series that also carry mystery, emotion, and the thrill of discovery.

Some take you to space. Some dive into time, tech, or the mind.

But all of them make you ask one thing: What’s really going on?

1. Sisyphus: The Myth (2021)

Genre: Sci-Fi, Time Travel, Action

A genius engineer and a mysterious woman from the future try to stop the world from collapsing.

Big ideas. Bigger stakes.

It’s messy at times, but packed with tension and cool tech.

2. Alice (2020)

Genre: Sci-Fi, Time Travel, Mystery

Time travelers from the future use a portal called "Alice."

But one officer’s life changes when he meets a woman who looks like his dead mother.

Twists, paradoxes, and emotional threads.

3. Circle: Two Worlds Connected (2017)

Genre: Sci-Fi, Mystery, Dual Timeline

Half the story is in the present, half in the future.

Aliens, memory tech, and crimes connect two timelines.

It’s quiet but smart — with one of the best sci-fi plots in K-dramas.

4. Grid (2022)

Genre: Sci-Fi, Thriller, Supernatural

A mysterious being known as "The Ghost" saves Earth with a solar shield — then vanishes.

Years later, she returns… but not as a savior.

This one’s moody, slow, and unsettling — perfect if you liked The Silent Sea’s vibe.

5. Dr. Brain (2021)

Genre: Sci-Fi, Mystery, Thriller

A brain scientist tries to “sync” with the memories of the dead to solve his wife's mysterious death.

It’s emotional and cold at once.

Big Black Mirror energy — but more personal.

6. L.U.C.A.: The Beginning (2021)

Genre: Sci-Fi, Genetic Engineering, Action

A man with strange powers is hunted by a secret organization.

He doesn’t know who he is — but everyone else does.

Fast-paced and full of mystery.

7. The 8th Night (2021 – Movie)**

Genre: Supernatural Horror, Sci-Fi Mystery

Though technically a movie, this one's worth the watch.

An exorcist must stop an ancient evil that moves from body to body.

Sci-fi meets folklore in a creepy way.

8. SF8 (2020)

Genre: Sci-Fi Anthology

Eight different directors. Eight stories.

Topics include AI, VR, surveillance, climate change, and robot ethics.

Each episode feels like a mini movie.

Some hit harder than others, but it’s bold and different.

9. Joseon X-Files (Secret Investigation Record) (2010)

Genre: Historical Sci-Fi, Mystery

Yes, it’s old — and set in Joseon era.

But this hidden gem follows investigators as they uncover strange events: aliens, monsters, unexplained science.

Think X-Files, but with swords.

10. Duty After School (2023)

Genre: Sci-Fi, Alien Invasion, Survival

High school students are forced to fight an alien invasion.

The tension builds fast.

It’s not just about aliens — it’s about fear, growing up, and who you become in crisis.

11. Dark Hole (2021)

Genre: Sci-Fi, Mutation Horror, Survival

A mysterious black smoke mutates people into monsters.

A detective and a survivor try to save what’s left.

It’s dark, grim, and packed with dread — like The Silent Sea but on Earth.

12. Parasyte: The Grey (2024)

Genre: Sci-Fi, Alien, Horror

Based on the popular Japanese manga, this Korean remake focuses on parasitic aliens that invade human bodies.

It’s fast, brutal, and packed with questions about identity.

If you liked the quiet horror of The Silent Sea, try this next.