An impossible locked-room murder: Captain Mortuga lies dead beside an ancient cauldron aboard the world’s strangest submarine, crewed by sketchy suspects. A handcrafted point-and-click with sharp humour and tricky puzzles. Dive into the next mystery from the creators of Tangle Tower & Crow Country.
Player intelligence
Live Steam analytics
Current players
128
0.0%
24 hour peak
191
30 day growth
—
7 day change
—
90 day change
—
Needs more history
365 day change
—
Needs more history
Share & embed
Optional embed codes for sites and communities, plus quick links to similar titles and comparisons.
Collapsed by default — expand when you need embed HTML or compare links.
SteamScope Score
Our proprietary quality index — one number that summarizes how well a game is holding its audience and community over time.
SteamScope Score is our proprietary 0–100 index of how a title is performing on Steam. It is recalculated on a regular schedule from SteamScope's own tracking pipeline and reflects live audience size, community health, recent momentum, and long-term staying power in one trusted number. Trend Score on the same page measures short-term movement separately.
Momentum Score
56
Community Score
83
Longevity Score
35
Score change
▲ +12
Updated Aug 9, 2026, 2:45 AM UTC
Popularity
How large the live audience is right now
35
Growth
Recent movement in player counts
50
Retention
How current activity compares with past highs
67
24 hour change
0.0%
7 day change
—
30 day change
—
Score history
Daily score snapshots over the last 30 days.
Current score
59
Previous
47
Highest ever
59
Lowest ever
47
30 day change
▲ +12
About
Store description and overview from Steam.
In the pitch-black waters beyond a long-abandoned fishing town, the enigmatic captain of the world's strangest submarine has been murdered. Some say he was an immortal time-traveller. Others say he was a vampire, cursed to stay hidden beneath the waves forever...
Found alone in a locked room, with only an ancient stone cauldron to suggest how he might have died, it's up to Detective Grimoire and Sally to piece together what really happened. Was it a curse, released from the cauldron? One of the submarine's eccentric crew? Or does the bizarre truth run even deeper...
• Every clue is a fully realised 3D object waiting to be examined for hidden secrets
• Grimoire and Sally are back, and joined by a fully voiced cast of mysterious suspects
• A hauntingly beautiful original soundtrack performed by the Budapest Art Orchestra
• Explore every hand-painted inch of The Mortuga Submarine, where not all is as it seems...
*Voice audio is only in English
Concurrent Steam players over time, aggregated per selected range from stored metrics.
The Mermaid Mask currently has 128 concurrent Steam players on SteamScope. Tracked peaks include a 24-hour high of 191 and an all-time high of 191. The player history chart below aggregates stored concurrent player readings over selectable time ranges.
Steam reviews
Community sentiment and review volume tracked from the Steam store.
Total reviews
1.6K
Positive
1.6K
Negative
5
Score
100%Overwhelmingly Positive
Guide
The Mermaid Mask is tracked on SteamScope with live Steam concurrent player data, historical charts, and a preliminary SteamScope Score of 59/100 (Declining). Search for "The Mermaid Mask player count" or "The Mermaid Mask steam charts" to monitor how many people are playing right now and how activity compares with past peaks.
The Mermaid Mask is developed by SFB Games, released 16 Jul 2026, a Adventure, Casual, Indie title. Available on Windows, macOS.
The Mermaid Mask currently reports 128 concurrent Steam players with a 24-hour peak of 191 and an all-time peak of 191.
Player counts remained largely unchanged over the past 24 hours.
Among tracked Steam titles, The Mermaid Mask ranks #2231 of 18,636 by momentum score.
The Mermaid Mask currently has 128 concurrent Steam players on SteamScope. Tracked peaks include a 24-hour high of 191 and an all-time high of 191. The player history chart below aggregates stored concurrent player readings over selectable time ranges.
The Mermaid Mask maintains stable player activity at 128. A SteamScope Score of 59/100 (Declining) indicates the title continues to sustain an active player base over time.
The Mermaid Mask is currently €20.49 on Steam. The lowest tracked store price is €20.49 (recorded Aug 7, 2026).
The Mermaid Mask has 100% Steam reviews across 1.6K user reviews. Steam labels this as "Overwhelmingly Positive".
The Mermaid Mask has 21 Steam achievements tracked on SteamScope.
The average global unlock rate across all achievements is 65%, giving a baseline for overall completion difficulty.
The most common achievement is "The Curse in the Cauldron" with a 93.8% unlock rate.
The rarest achievement is "Silversnake Sleuth" — only 26.5% of players have unlocked it (Medium).
Titles sharing genres and comparable player activity on Steam.
Games with strong recent player growth and rising activity.
High-traffic titles with large live player counts right now.
Explore more games in the same categories.
Explore more games with the same official Steam store features.
Explore
Browse screenshots, patches, requirements, and more without scrolling through everything at once.
Steam Features
Official Steam store feature flags from the Steam API.
Handheld Gaming
Official Steam Deck verification status and test notes from the Steam store.
Deck test results
SteamOS status: Playable
Last checked Aug 7, 2026
Store Details
Controller support: Full controller support
Steam achievements: 21
Support
[email protected]Regional ratings
Media
Updates
System requirements
Minimum and recommended specs from the Steam store listing.
Minimum
Minimum
Languages
Store options
The Mermaid Mask - 20,49€
Tracked Steam store price snapshots over time.
The Mermaid Mask is currently €20.49 on Steam. The lowest tracked store price is €20.49 (recorded Aug 7, 2026).
Track store-wide deals on the Steam sales, historical low prices, and recent price drops pages. Browse games under $10, free Steam games, or budget picks under $5.
How this game's Steam Charts position has changed over time.
How Steam review score and volume have changed over time.
The Mermaid Mask has 100% Steam reviews across 1.6K user reviews. Steam labels this as "Overwhelmingly Positive".
Intelligence
Patch notes, discounts, and player spikes surfaced from stored Steam metrics.
Large concurrent player increase in stored metrics.
Steam announcement or patch note.
Steam announcement or patch note.
Steam announcement or patch note.
Steam announcement or patch note.
Steam announcement or patch note.
Steam announcement or patch note.
Achievements
This game
65% avg unlock
40 peer games
19.8% median
Comparison
Easier than peers
Achievements
5 standard · 16 hidden · Updated 2d ago
65%
average global unlock
Most Common
The Curse in the Cauldron
93.8% unlock rate
Rarest Achievement
Silversnake Sleuth
26.5% unlock rate
firstChapter
93.8%
global unlock
Reach Chapter One
allCellPhone
81.9%
global unlock
No description provided by Steam.
bookcaseHole
79.1%
global unlock
No description provided by Steam.
goldenLocket
78.3%
global unlock
No description provided by Steam.
captainsCabin
77.9%
global unlock
No description provided by Steam.
sinthiaCasefile
76.8%
global unlock
No description provided by Steam.
allMagazine
76.0%
global unlock
Read through the Movie Magazine
dictaphone
75.3%
global unlock
No description provided by Steam.
removeBandage
74.8%
global unlock
No description provided by Steam.
allClues
69.1%
global unlock
Find all the clues
bothRadios
67.3%
global unlock
No description provided by Steam.
allFilms
67.0%
global unlock
No description provided by Steam.
bothLevers
66.6%
global unlock
Pull both levers on the submarine's Control Panel
allLetters
66.6%
global unlock
No description provided by Steam.
allCluesReal
66.2%
global unlock
No description provided by Steam.
completeGame
59.8%
global unlock
Complete the Game
allHer
57.4%
global unlock
No description provided by Steam.
fixedCompass
48.9%
global unlock
No description provided by Steam.
boggyHead
34.3%
global unlock
No description provided by Steam.
hexapus
28.9%
global unlock
No description provided by Steam.
silversnake
26.5%
global unlock
No description provided by Steam.
Longevity
Sustained interest over the catalogue lifetime
31
FAQ
