Official launch trailer
The Mermaid Mask — Launch Trailer
Meet Grimoire and Sally, tour the Mortuga, and preview the hand-painted investigation without opening a spoiler-heavy walkthrough.
Watch full video · SFB Games on YouTube →Unofficial Detective Walkthrough Wiki
The Mermaid Mask
A fan-made walkthrough for the point-and-click murder mystery — solve the murder of Captain Magnus Mortuga aboard the submarine Mortuga, with every puzzle and suspect explained.
- Released
- Jul 16, 2026
- Genre
- Point-and-Click
- Style
- Hand-painted
- Platforms
- PC / PS5 / Switch
- Series
- Detective Grimoire
Start here
Choose your next guide
Follow a practical route from the first hour to the exact puzzle, fight, or system blocking your progress.
01
Tips
Beginner Tips for The Mermaid Mask
Point-and-click basics, a no-combat no-timer mindset, and the habits that make the Mortuga easy to read.
02Walkthrough
The Mermaid Mask — Full Walkthrough
From the Stone Top Inn to the truth aboard the Mortuga: a step-by-step route through every cabin, suspect, and the Mermaid reveal.
03Puzzles
The Mermaid Mask — Every Puzzle Solution
A complete solution index for all of the Mortuga's puzzles: the serpent cabinet, cauldron, wooden box, wiring, piggy bank, dream bottle, and more.
04Story
Ranking the Suspects — Means, Motive, Opportunity
An evidence-led breakdown of the four suspects aboard the Mortuga and how to read the clue that names the killer.
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Direct answers to the guides players look for first.
Walkthrough
The Mermaid Mask — Full Walkthrough
From the Stone Top Inn to the truth aboard the Mortuga: a step-by-step route through every cabin, suspect, and the Mermaid reveal.
Read more →Puzzles
The Mermaid Mask — Every Puzzle Solution
A complete solution index for all of the Mortuga's puzzles: the serpent cabinet, cauldron, wooden box, wiring, piggy bank, dream bottle, and more.
Read more →Puzzles
Control Room Puzzles — Wiring & Panel
Step-by-step solutions for the Electrical Switchboard and the Electronic Panel in the Mortuga's control room.
Read more →Puzzles
Engine Room Puzzle Walkthrough — Valve Sequence & Pressure
Step-by-step solution for the mandatory engine-room sequence, including the valve order and pressure-gauge timing.
Read more →Story
Ranking the Suspects — Means, Motive, Opportunity
An evidence-led breakdown of the four suspects aboard the Mortuga and how to read the clue that names the killer.
Read more →Story
Story & Endings — The Mermaid Truth
Who the suspects are, what the bedroom letter reveals, and how the multiple endings of The Mermaid Mask branch.
Read more →Guide matrix
Find the exact answer you need
Browse focused answers by player task instead of searching through one oversized article.
What is The Mermaid Mask?
The Mermaid Mask is a hand-painted detective adventure from SFB Games. Grimoire and Sally investigate the murder of Captain Magnus Mortuga aboard a strange submarine, examining rooms, questioning suspects, and solving evidence-driven puzzles.
At a glance
| Developer / Publisher | SFB Games |
|---|---|
| Platforms | Windows, macOS, PS5, Nintendo Switch and Switch 2 |
| Genre | Point-and-Click Detective Adventure |
| Investigators | Detective Grimoire and Sally |
| Setting | The Mortuga submarine |
| Release Date | July 16, 2026 |
Data snapshotGame data snapshot: Jul 2026
Announcements
Latest patches, content drops, and notes from the dev log.
The Mermaid Mask released
SFB Games launched the mystery adventure on PC, PlayStation 5, Nintendo Switch, and Nintendo Switch 2.
July release date announced
The release-date trailer confirmed the July 16 launch and showed new locations inside the Mortuga.
Frequently Asked Questions
Quick answers to what new detectives ask most.
Is The Mermaid Mask connected to Tangle Tower?
Yes. It is a new Detective Grimoire mystery from SFB Games and again follows Grimoire and Sally.
Which platforms can play it?
The July 16, 2026 release covers PC, PlayStation 5, Nintendo Switch, and Nintendo Switch 2.
Can I use this guide without spoiling the whole case?
Start with the beginner tips and individual puzzle pages. The full walkthrough and story pages are clearly separated for players who want direct answers.
Where does the investigation take place?
The case is set aboard the Mortuga, a strange submarine whose captain has been murdered.
Next step
Stuck somewhere inside the Mortuga?
Begin with spoiler-light investigation tips, then jump to the full route or the exact room and puzzle blocking your case.