Shadow Protocol: Signal Lost

Eleven seconds of numbers, broadcast on a police channel that has been dead for nine years. Then Jiwon — hacker, asset, friend — was gone.

SHADOW PROTOCOL: SIGNAL LOST is a neo-noir spy visual novel and the interactive sequel to the SHADOW PROTOCOL series. You are Detective Kang. Retrace Jiwon's last 72 hours across a rain-drowned Seoul, and solve the case the way she built it: as a chain of puzzles only you can finish.

SOLVE REAL PUZZLES

• THE DEAD CHANNEL — decode her final broadcast, fragment by fragment

• THE TIMELINE — rebuild her last 72 hours from oblique traces of time

• THE KEEPER'S ALIBI — interrogate a safehouse keeper and break his story with the right evidence, presented at the right moment

• TWO PARKS — your partner appears on two feeds at once. Prove which one is real

• THE GRID CIPHER — decode a rolling blackout district by district, against the clock

• THE BROKER'S BOARD — the villain's own game, played by his rules… until you change them

Every wrong move raises your EXPOSURE. Solve cleanly to earn key fragments — and only a clean decode can unmask the Broker in the finale. Get sloppy, and you'll have to choose between the truth and the people it would burn.

TRUST IS A METER

Interrogate with pressure, empathy, or bluff. Park's loyalty shifts with every choice — earn it, and he'll feed you hints no one else can. Lose it, and face the Broker's board alone.

REAL VIDEO SCENES

Cinematic sequences built from actual generated video — Seoul from above as the signal sweeps the grid, a rain rooftop where a phone lights up at the worst possible moment.

FEATURES

• A complete ~43,000-word branching thriller in 7 chapters

• 6 story puzzles with hints, retries, and a consequences system

• Timed decisions under pressure

• 3 endings: TRUTH, LOYALTY, and the Broker's ending

• Evidence board, chapter select, gallery, backlog, auto-play, 3 save slots

• An original noir score: drones, pulse, and Jiwon's piano theme

• No ads, no in-app purchases — the whole case, complete

The first game is over. This one, you play.