The Real Killer
Play Case 1 Free

The Real Killer — Free Browser Detective Mystery Game & Solo Investigation Visual Novel

Five suspects standing beneath Pylon 2 at the Danwol quarry on a rainy night
The Real Killer
01
Next Suspect
Yeom fixes papers in Room 307 every night.
Solo detective mystery.A new killer every time.
No install · ~1 hr per caseApp Store · Google Play
Solo detective mystery.A new killer every time.
No install · ~1 hr per caseApp Store · Google Play

In-Game Screens

In-Game Screens
Live screens from Case 1 on the web. Tap any print to enlarge.
In-Game Screens
Live screens from Case 1 on the web. Tap any print to enlarge.

Become Someone New

Become Someone New
Each case brings a new era, scene, and ID.
CASE 01
Pylon 2
2003 Danwol
Free
01
CASE 02
Take a Number
1998 Solpyeong
Buy
02
Case 01 · 2003 Danwol · Reporter Yoon

How You Solve

How You Solve
Visit scenes and meet people.
Nothing's been ruled a suicide yet....Fine, I wrote the draft under orders.
Show proof when stories clash.
Visit –30m
Every step costs clock time.
He left with a .
Gondola falls at .
Fill blanks with word cards.
SOLVEDNOT PROVENWRONG MAN

Case 1 Free on the Web

Manuscript paper and a case guide on a newsroom desk by the window at dawn after the rain
Case 1 Free on the Web
Finish Case 1 in your browser. Later cases will come one by one in the app.
Genre
Solo detective mystery
Time
About 1 hour per case
Languages
Korean, Japanese, English, Spanish
Platform
Web · iOS · Android
Price
Case 1 free · Paid from Case 2
Case 1 Free on the Web
Finish Case 1 in your browser. Later cases will come one by one in the app.
Genre
Solo detective mystery
Time
About 1 hour per case
Languages
Korean, Japanese, English, Spanish
Platform
Web · iOS · Android
Price
Case 1 free · Paid from Case 2

App StoreGoogle Play

Editorial Dossier · Game Overview & Case Archive

The Real Killer — A Free-⁠to-Start Browser Detective Mystery & Investigation Visual Novel

The Real Killer is a single-player detective mystery game and investigative visual novel where every episode puts you inside the story with a new identity, a ticking deadline, and a notebook full of conflicting accounts. Your first assignment, Case 01: Pylon 2, is playable from start to finish right in your web browser—free to the end, with no download and no account sign-up.

While many mystery stories stay fixed once you reach the ending, The Real Killer changes the culprit every time you begin anew. Each time you start a fresh investigation in Case 01, one of the five suspects becomes the real culprit. You visit the same rainy streets of Danwol City and meet the same cast of people, yet a different suspect fabricates an alibi and conceals key actions. Previous answers cannot carry you through; each investigation relies on comparing the statements and records gathered during that playthrough.

Four-Step Investigation Built on Comparing Statements and Records

Because you work the case as a local newspaper reporter or insider without police arrest powers, progress comes from four connected investigative steps.

01

Field Visits & Ticking Clock

Time before the deadline is limited. You choose where to go across Danwol City—visiting the boarding house, the quarry hut, City Hall, the cable car control room, and the cruise pier. Moving between locations or waiting advances the hands of your wristwatch and spends remaining time slots, making your route and interview order matter.

02

Line-⁠by-Line Questioning & Alibi Checks

Witnesses and the five suspects speak one sentence at a time. Bystanders share what they saw, while the culprit bends key times or movements to build an alibi. Gathering logbooks, call records, and sightings in your reporter's notebook highlights where two accounts of Wednesday night clash.

03

Presenting Proof & Breaking Lies

Whenever a line clashes with a photograph, document, or word card in your notebook, press Hold it and present the proof on the spot. Matching the contradicted sentence with the relevant evidence strikes out the false claim and opens up hidden movements and new leads.

04

Deduction Board & Verdict Stamps

At the close of each chapter, the Deduction Board in your notebook opens so you can place collected word cards into blank sentences and organize verified facts. When you close the investigation and name the culprit with supporting proof, your result receives one of three stamps—Solved, Not Proven, or Wrong Man—saved per suspect in the in-game Case Log.

Read the Full Investigation Guide

Case Files — Standalone Mysteries Across Changing Settings and Roles

Every episode in The Real Killer is a standalone murder case in a distinct city and setting, handing you a different credential at the start of each story.

First Case Free to the EndDanwol City · Sea Cable

Case 01 · Pylon 2

Role: Yoon Ji-⁠woo, City Desk Staff Reporter at the Danwol Daily

"Reporter Yoon, it's Moon Tae-⁠seop. Sorry to call so late."

Returning from a reporting trip on Friday morning, you find a Wednesday late-night voicemail left by safety inspector Moon Tae-⁠seop. That same dawn, the inspector was found dead at the bottom of the abandoned quarry. Police prepare to close the death as a fall, while City Hall holds a threat letter warning that the first sea gondola will plunge past Pylon 2 during the weekend opening ceremony.

Before the deadline runs out, you question five suspects tied to the cable car project and uncover who is lying about Wednesday night.

  • Yeom Jae-⁠gon (Site chief, Haedam Construction) — Rumored to adjust paperwork nightly in a motel room; claims an early night with the lights out.
  • Kang So-⁠yeon (Operations lead, Danwol Sea Cable) — Rumored to have run a gondola alone at night; states no cabin moved while staffing control.
  • Ha Myung-soo (Tourism manager, City Hall) — Rumored to have pointed to a suspect ahead of police; claims to have stayed home taking calls.
  • Oh Se-⁠chang (Head of the inspection team) — Rumored to drink nightly with the builder's staff; claims an early night in staff quarters.
  • Pyo Man-⁠gil (Owner of the cruise boat Danwol) — Rumored to take the boat out dark on Wednesday nights; claims to have mended nets aboard.

Play Case 01 on the WebExplore the Case 01 Setting & Suspects

Mobile App CaseSolpyeong · Savings Vault

Case 02 · Number Ticket

Role: Lim Jung-⁠min, Business Desk Staff Reporter at the Solpyeong Daily

"Reporter Lim, what brings you back at this hour?"

On the night before a local savings institution in Solpyeong faces suspension, anxious depositors line up outside through the cold night holding numbered waiting tickets. Before dawn, the managing director is found dead inside the underground vault room.

Carrying the press pass of Solpyeong Daily business reporter Lim Jung-⁠min, you compare entry logs, waiting ticket sequences, vault key custody, and conflicting statements to find the culprit.

The first case is free to the end. Later cases open individually or in a three-case bundle in the official mobile app on the App Store and Google Play, where local store pages display regional terms.

Platforms, Local Saves & Common Questions

Can I play the entire first case free in my browser without installing anything?
Yes. You can play Case 01: Pylon 2 from start to finish in desktop or mobile web browsers at /play/ with no download and no sign-up. Finishing one case takes about an hour.
Where is my game progress saved?
In the web version, your active save, Case Log stamps, and language or sound settings remain inside your browser's localStorage and are never uploaded to our server. In the mobile app, progress stays on your phone with no name or email required.
What changes when I start a case over from the beginning?
Each time you start over, one of the five suspects becomes the real culprit. Because hidden actions and false statements shift accordingly, you can return to uncover every culprit path and collect Solved stamps in your Case Log.
Which languages and devices are supported?
English, Korean, Japanese, and Spanish are supported and can be switched anytime from the language menu or settings. Play Case 01 in your browser or get the official app on iOS (App Store) and Android (Google Play).

Read All Frequently Asked Questions