If you’re exploring The Mermaid Mask, chances are you’ve already realized that not every puzzle has an obvious solution. Some rely on clues hidden around the ship, while others expect you to notice tiny details that are easy to overlook.
This guide walks through every major puzzle in the game, explains how each one works, and provides the correct solution whenever possible. If you’d rather solve everything yourself first, I’d recommend only checking the section you’re currently stuck on to avoid unnecessary story spoilers.
Warning: This guide contains puzzle solutions and minor progression spoilers.
Serpent Statue Cabinet (Mess Hall)
Location
Mess Hall – Examine the serpent statue mounted on the wall.
How to Solve It
Each window must display a shape with the same number of sides as the number shown.
Rotate the dials until:
- First dial shows a Square in the second window.
- Second dial shows a Triangle in the first window and a Square in the third.
- Third dial shows a Pentagon in the second window and a Square in the fourth.
- Fourth dial shows a Triangle in the third window.
Reward
- Sun Tablets
Perfume Shelf (Dream Chamber)
Location
Dream Chamber – Perfume shelf.
How to Solve It
Match each dropper to the bottle that matches its description.
Bottle clues:
- Aerated with effervescence
- Marked with an X
- Crimson-colored label
- Thick, sticky liquid
- Produces visible vapor
- Drips very quickly
Carefully inspect each bottle before placing the droppers.
Reward
- Bookshelf unlocks
Wooden Chest (Child’s Room)
Location
Child’s Room
How to Solve It
Arrange the cards so all three girls are complete.
Then:
- Make the girls on both sides face the center girl using the distortion lenses.
- Place one shrinking lens on one outer doll.
- Place one enlarging lens on the other outer doll.
The left and right dolls simply need opposite sizes.
Reward
- Glass Eyeball
Electrical Switchboard (Control Room)
Location
Control Room
How to Solve It
Match the colored plugs to these sockets:
| Plug | Sockets |
|---|---|
| Red | 1 & 9 |
| Yellow | 4 & 6 |
| Blue | 3 & 11 |
Reward
- Captain’s Log
Model Town (Captain’s Quarters)
Location
Captain’s Quarters
How to Solve It
Rotate the boats and adjust each sail so they create one continuous path leading to the red X.
The Roman numerals on each sail indicate how many spaces the route continues before reaching another boat.
Reward
- Film Reel
Pig Safe (Sym & Sinthia’s Bunk)
Location
Sym & Sinthia’s Bunk
Solution
From the default position:
- Hat ×3
- Left Eye ×2
- Right Eye ×0
- Left Cheek ×1
- Right Cheek ×0
- Nose ×2
- Tongue ×1
Reward
- Underwater Photo
Phone Puzzle (Dirk & Wirman’s Bunk)
Location
Dirk & Wirman’s Bunk
How to Solve It
Build the symbols shown beneath each column by dragging the correct pieces into every slot.
Several symbol pieces are shared across multiple rows, so think of the puzzle as building both rows and columns simultaneously.
Reward
- Phone Access
Typewriter Puzzle (Dirk & Wirman’s Bunk)
Location
Dirk & Wirman’s Bunk
How to Solve It
Recreate the displayed symbol pattern while rotating it correctly.
Final orientation:
- Open Circle → 12 o’clock
- Diamond → 3 o’clock
- T Symbol → 5 o’clock
- Closed Circle → 6 o’clock
You’ll need to rotate both the symbol dials and their outer rings.
Reward
- Handwritten Letter
Compass Puzzle (Engine Room)
Location
Engine Room
Match Each Compass
- Yellow → Points away from every other compass.
- Purple → Refuses to participate.
- Pink → Behaves like a clock.
- Red → Points toward every other compass.
Reward
- Ocean Map
Pin Board (Cargo Hold)
Location
Cargo Hold
How to Solve It
Move each character to their current story location.
Important placement:
- Sally → Cargo Hold
- Grimoire → Cargo Hold
- Mariana → Cargo Hold
- Magnus → Remove completely from the board.
Reward
- Moon Photo
Diving Helmet Puzzle (Airlock Grotto)
Location
Airlock Grotto
How to Solve It
Rotate every dial until all connecting lines match perfectly where they meet neighboring dials.
Take your time, as small adjustments affect multiple connections.
Reward
- Pocketbook
Bilge Switch Puzzle
Location
Bilge Entrance
How to Solve It
Rotate both the dials and the orbs until their positions match one of the displayed center patterns.
This puzzle mainly relies on experimentation.
A helpful tip is to listen carefully—the buzzing sound becomes stronger whenever a section is correctly aligned.
Reward
- Opens the Bilge
Wooden Panel (Illusion Theater)
Location
Illusion Theater
How to Solve It
Arrange every suit so it matches the direction shown at the top of each tile.
Reward
- Lifesize Doll
- Film Projector
Mushroom Puzzle Box (Cargo Hold)
Location
Cargo Hold Tent
Mushroom Counts
Rotate the sun to determine how each mushroom reacts to daylight.
Correct totals:
| Mushroom | Count |
|---|---|
| Dayglo | 3 |
| Evergleam | 2 |
| Illuminight | 4 |
| Nevergleam | 5 |
Reward
- Dictaphone Tape
Electronic Panel (Control Room)
Location
Control Room
How to Solve It
Move each panel into the correct position while adjusting the internal weights.
The puzzle provides an audio clue.
If you hear a stronger electrical buzzing, that piece is closer to its correct placement.
Reward
- Handheld Radio
Treasure Chest (Dome Tank)
Location
Dome Tank
Correct Pirate Placement
Match each pirate to the correct tower.
| Tower | Pirate |
|---|---|
| Blue | Eyepatch Pirate |
| Red | Hat Pirate |
| Yellow | Pirate with normal vision |
| Green | Spyglass Pirate |
Rotate each pirate until they’re looking toward the matching tower.
Reward
- Ocean Treasure
Skull Shelf (Cabinet of Curiosities)
Location
Cabinet of Curiosities
How to Solve It
Arrange both the skulls and their labels so every skull correctly matches its:
- Eyes
- Nose
- Jaw
The remaining characteristics belong across the top row as labels.
Carefully compare every skull before moving the labels around.
Reward
- Mermaid’s Tongue
Puzzle Rewards Summary
| Puzzle | Reward |
|---|---|
| Serpent Statue Cabinet | Sun Tablets |
| Perfume Shelf | Bookshelf Access |
| Wooden Chest | Glass Eyeball |
| Electrical Switchboard | Captain’s Log |
| Model Town | Film Reel |
| Pig Safe | Underwater Photo |
| Phone | Phone Access |
| Typewriter | Handwritten Letter |
| Compasses | Ocean Map |
| Pin Board | Moon Photo |
| Diving Helmet | Pocketbook |
| Bilge Switch | Bilge Access |
| Wooden Panel | Lifesize Doll & Film Projector |
| Mushroom Puzzle Box | Dictaphone Tape |
| Electronic Panel | Handheld Radio |
| Treasure Chest | Ocean Treasure |
| Skull Shelf | Mermaid’s Tongue |
The Mermaid Mask features a great mix of logic, observation, and environmental puzzles. While some can be solved with careful reading of in-game clues, others—like the Pig Safe, Mushroom Puzzle Box, or Electrical Switchboard—can be surprisingly tricky without a bit of guidance.
If you’re aiming for a full completion, it’s worth collecting every reward from these puzzles, as many of them unlock important story items or grant access to new areas of the ship. Using this guide only when you’re truly stuck lets you enjoy the mystery while avoiding unnecessary frustration.