The Mermaid Mask: All Puzzle Solutions Guide

Do not treat the numbers as a combination code. Each number tells you how many sides the shape or shapes inside that window must have in total.

The puzzle uses triangles, squares, and pentagons. A triangle has 3 sides, a square has 4, and a pentagon has 5. Some windows require one shape, while others require the combined total of two shapes.

The four window values are 3, 9, 7, and 4. Rotate the dials until the following shapes appear:

Once every window displays the correct total, press the lock button in the upper-right corner.

Result: The cabinet opens and you can collect the Sun Tablets.

Focus on the possibility that Mortuga opened the locked cauldron himself rather than being placed inside it by another person.

The deduction does not identify a person hiding elsewhere in the room. Consider whether the dangerous thing was already inside the cauldron.

Connect the clues to form the following sentence:

Magnus Mortuga unlocked the cauldron and was killed by what was inside.

After completing the deduction, the game asks what stands out about the inside of the cauldron. Rotate it and select the scratches.

Result: Completing the deduction and identifying the scratches finishes the Prologue and begins Chapter One.

Begin by pairing the six cards into three complete pictures. Each completed picture must have a girl’s head on top and her doll directly underneath.

The girls on the outside should look toward the girl in the middle. The two remaining lenses belong on the outer dolls, with their sizes reversed relative to the dolls.

1. Arrange the cards into three vertical girl-and-doll pairs.
2. Place an eye lens over the left girl so she looks toward the center.
3. Place the other eye lens over the right girl so she looks toward the center.
4. Place the small lens on the left girl’s doll.
5. Place the large lens on the right girl’s doll.
6. Do not place any lenses on the middle girl or her doll.
7. Press the lock button in the upper-right corner.

Result: The chest opens and you can collect the Glass Eyeball.

The plugs are divided into three matching pairs: red triangles, yellow circles, and blue squares. Both plugs in a pair must be placed before their part of the display becomes clear.

Each color uses two sockets. The correct pairs are spread across the panel rather than being placed next to one another.

The final socket arrangement is:

• Red: 1 and 12
• Yellow: 4 and 6
• Blue: 7 and 11

Result: The compartment in the control panel opens and you can collect the Captain’s Logbook.

Rotate the pig and examine the number grid on its back. The red values are fixed targets, while the white values change when you adjust the pig’s features.

Adjust one feature at a time and check how it changes the white values. Every row and column must add up to its corresponding red number.

• Hat pointing to the right
• Left eye pointing to the right
• Right eye pointing forward
• Nose pointing downward
• Left cheek illuminated
• Tongue sticking out

Rotate the pig after making these changes and confirm that the white values match the red totals in every row and column.

Result: The Piggy Bank opens and you can collect the Underwater Photo.

Each inserted piece contributes to both a horizontal and a vertical shape sequence. A piece may appear correct in one direction but still be wrong in the other.

The longest sequence gives you the most information. Complete A Across first, then use its intersections to solve B, C, and D Down.

A Across

1. <
2. Backward L turned on its side
3. V
4. >
5. Straight line

B Down

1. Backward L
2. /
3. <

C Down

1. U
2. ^
3. V

D Down

1. Upside-down U
2. L turned on its side
3. Straight line

Result: The phone unlocks. You can then inspect its messages, contacts, call information, and other available entries.

The symbols are not unrelated drawings. Each sequence shows the same basic shape rotating from one position to another.

Each turn changes a symbol by 45 degrees. Set the middle symbol on each row to the rotation that logically fits between the symbol on its left and the one on its right.

Start with the right-hand dial because it has the most limited set of possible symbols. Match it to the missing 45-degree rotation shown on the paper, then repeat the same process for the middle and left dials.

Because the puzzle uses unnamed abstract symbols, the image below shows the exact final position of all three dials more clearly than a text description.

Result: Solving the Typewriter puzzle reveals a handwritten letter addressed to Wirman from Ibis.

You can open the bottles and observe how their contents behave. Pay attention to how each liquid drips, whether it releases vapor, and how thick or thin it appears.

The text above the bottles describes their physical behavior. Match each bottle to a description first, then move the corresponding lid into that position.

Arrange the bottle lids in the following order from left to right:

1. Arrow
2. Bird Skull
3. Moon
4. Hand
5. Eye
6. Sun

Result: The glass panel opens. Afterward, inspect the bookshelf directly above the bottles to collect the Caretaker’s Journal.

Do not place the characters according to where they were during the night of the murder. The board is asking about their locations at the current stage of the investigation.

Match every living character to the room where you currently find them. One character no longer belongs in any room on the submarine map.

Place each living character on the section of the map representing their current room. Place the deceased character, Magnus Mortuga, outside the submarine map.

The screenshot below shows the exact arrangement for the point in the story when this puzzle becomes available.

Move the compasses close together and farther apart. Their needles behave differently depending on the position of the other compasses.

You are looking for one compass that points away from the others, one that points toward them, one that acts like a clock, and one that refuses to cooperate normally.

The panel unlocks when all four colored compasses are placed in the correct positions.