"The Silent Sea" Left You Curious? These Top Korean Dramas Go Deeper! 2026

When The Silent Sea dropped, it felt like something fresh in the K-drama world. A dark, haunting mystery set in space, with science fiction colliding with human survival. It wasn’t just about astronauts or outer space—it was about fear, trust, and how far people will go when pushed against the edge. If you finished it and still crave that sense of curiosity and depth, don’t worry. There are plenty of Korean dramas that explore science, secrets, and the mysteries of being human in ways just as gripping. Here are twelve dramas that go deeper and leave you questioning long after the credits roll.

1. Sisyphus: The Myth

This series combines science fiction with a gritty mystery. Cho Seung-woo plays a genius engineer who uncovers shocking truths about the world, while Park Shin-hye arrives from a dystopian future to save him. Like The Silent Sea, it asks big questions about survival, fate, and the price of knowledge.

2. Signal

One of Korea’s most acclaimed thrillers, Signal isn’t about space, but it bends time itself. Detectives in the present connect with a detective from the past using an old radio. Each case unravels painful truths, blending crime, mystery, and an eerie sense of destiny.

3. Kingdom

If The Silent Sea gave you chills, Kingdom will sink its teeth into you. A period piece with a supernatural twist, this series follows a prince uncovering a horrifying plague that reanimates the dead. It’s fast, brutal, and endlessly thought-provoking, showing humanity at its darkest.

4. My Holo Love

This drama touches on loneliness in a futuristic way. A woman who struggles with face blindness finds unexpected comfort in an AI hologram designed to look and act human. It’s softer than The Silent Sea, but it raises deep questions about identity, connection, and what makes love real.

5. Stranger (Secret Forest)

No sci-fi here, but if you loved the psychological layers of The Silent Sea, this legal-thriller is a must-watch. A prosecutor who cannot feel emotions uncovers corruption inside Korea’s justice system. Cold, intelligent, and razor-sharp—this is storytelling that demands your full attention.

6. Alice

Time travel takes center stage in Alice. A detective discovers a portal that lets people travel between years, only to stumble upon a shocking personal truth that rewrites his life. It has the same “bigger than us” energy that The Silent Sea carried.

7. Sweet Home

When people inside an apartment complex start turning into monsters, survival becomes the only goal. Based on the popular webtoon, Sweet Home blends horror, action, and humanity’s darkest instincts. If you loved the claustrophobic tension of The Silent Sea, this is a natural next step.

8. 365: Repeat the Year

Ten people are given the chance to reset their lives by going back one year. At first, it feels like a blessing, but soon the cost of rewriting fate begins to show. It’s tightly written, mysterious, and plays with ideas of regret and destiny.

9. Save Me

While not science fiction, Save Me dives deep into fear and survival of another kind. A young woman becomes trapped in a cult, and her desperate fight for freedom is filled with psychological tension. It mirrors the helplessness and moral battles you saw in The Silent Sea.

10. Kairos

This underrated gem explores time and fate. A man in the present, and a woman a month in the past, connect through mysterious phone calls. Together, they try to save the people they love. The puzzle-like storytelling keeps you questioning until the end.

11. Duel

Cloning takes the spotlight in Duel. A detective’s daughter is kidnapped, and he discovers the suspect is not one man, but two genetically identical beings. With science, morality, and humanity colliding, this show digs into themes as unsettling as The Silent Sea.

12. Grid

If The Silent Sea left you craving more Korean sci-fi, Grid is the one to watch. A mysterious being who saved humanity years ago suddenly reappears—but instead of helping, it seems to be aiding a killer. Suspenseful and futuristic, it captures the same sense of unease and intrigue.