Learn Korean the way detectives read evidence — closely.
Korean Whodunit started with a simple observation: language learners quit drills, but nobody walks out of a good mystery. So we stopped writing exercises and started writing crimes.
Every case on this site is an original murder mystery in which the decisive evidence is linguistic. A speech level that slips mid-sentence. An honorific that bows in the wrong direction. A verb ending that quietly confesses its speaker was in the room. The interface and story are in English, so you're never lost — but the clues are in Korean, and misreading one means the killer walks.
Textbooks teach Korean grammar as abstract rules to memorize. But features like 존댓말/반말 speech levels, the ~잖아 shared-knowledge suffix, honorific vocabulary, and the ~더라 evidential aren't rules — they're social information encoded in grammar. They tell you who the speaker thinks they are, who they're talking to, and what they've actually seen. That's exactly the kind of information a detective needs — and exactly the kind of understanding that separates learners who "know grammar" from learners who feel it.
When you catch a killer because 돌아가시다 can't describe its own author, you never forget how honorifics work. That's the entire teaching philosophy.
Four playable cases (from beginner-friendly to expert), a 20-minute Hangul tutorial for absolute beginners, and a growing library of grammar guides that go deep on the linguistic mechanics behind each case. Everything is free to play — the site is supported by ads on guide pages, never inside the cases.
All Korean content is reviewed for naturalness and accuracy by native speakers. All cases are fictional; any resemblance to real persons or events is coincidental. If you spot Korean that reads unnaturally, tell us — corrections ship in the next update.
Ready to work a case? Start with the Hangul tutorial if you're brand new, or go straight to Case 1: The Red-Stained Script.