Two-player mysteries, played in turns

Solve cases together.
Play when you can.

Each case gives you and your partner different evidence. Investigate for a few minutes, leave your partner a note, then come back later to see what they found.

Case 01 expanded 10 stages · 20 turns · 27 evidence puzzles

Play in your browser See how it works

Playable on the web · iOS and Android coming soon

Players: 02 people
Turn length: 06–10 minutes
Timing: HOURS apart

Two investigative desks, one lit in blue-grey and the other in warm amber.

First case · expanded The Amberline Protocol

TAKE A TURN WHEN YOU CAN DIFFERENT CLUES CASE 01 NOW EXPANDED A NEW SETTING WITH EVERY CASE NO NEED TO BE ONLINE TOGETHER TAKE A TURN WHEN YOU CAN DIFFERENT CLUES CASE 01 NOW EXPANDED

START HERE

Two sides of
the same mystery.

One of you searches the scene. The other checks records and timelines. What you find changes what your partner sees next.

01 / THE FORMAT

How it works

See how the two roles, short turns and handoffs fit together.

Follow a turn 02 / THE CASES

Open the files

Browse available mysteries and see what each case involves.

View all cases 03 / THE DETAILS

Before you play

Find out about turn length, timing and who you can play with.

Read the answers

A rain-dark municipal signal depot beside a Brackenmere canal.

FIRST CASE / EXPANDED EDITION 01

Begin in Brackenmere

The Amberline Protocol

A municipal archivist has vanished after activating an emergency protocol. Follow the trail she divided between two investigators—now across ten stages and twenty turns.

View the case file

A rain-wet bench with a token and several small pieces of evidence.

PLAYABLE IN YOUR BROWSER

Open the case.
Invite your partner.

Start The Amberline Protocol on the web today. iOS and Android apps are coming later.

Play now