
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.
Modeled estimate, not a reported figure. How we estimate →
Prices
The United States storefront in every case, so this compares stores and not countries.
Prices
Each in the currency that store quoted — not converted: the gap between two rows is the publisher's pricing, not an exchange rate.
Every market we collect.
About
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
Genres
Sums Steam only; PlayStation publishes no volume signal, so the true total is higher by an unknown amount.
| Store | Price | Audience | Score | Chart | Est. revenue |
|---|---|---|---|---|---|
SteamYou are here | $19.99 | 2.9Kreviews | 99% | — | $1.1M |
| $19.99 | 69ratings | 96% | — | not modelled |
Matched by title — a reused name can pair the wrong games. * is a critic aggregate. Prices and positions are each store's United States storefront; Epic charts worldwide. Audience and Score too, except Steam's, which is worldwide.
Engagement
Reviews
Themes across 1527 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
SFB's sequel serves superb success, starring a cast of compelling characters, perfect puns, and a marvelous mystery. Alliteration aside, The Mermaid Mask is truly impressive and delightful: a more than worthy successor to Tangle Tower for existing fans, and a self-contained experience for new players (though there are plenty of little references to the previous games).
Great Game. All the characters are charming and entertaining. You want to click all interactions to see what they say and descriptions of items and people. Game doesn't have annoying adventure game tropes and helps you if you get stuck. Really enjoyed my time playing and think i'll go back and play Tangle Tower.
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese, Spanish - Latin America, Traditional Chinese*languages with full audio support
Hours played at review time, across 1.5K reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
A worthy successor after Tangle Towers. I was sucked in just as much and fell in love with the new cast of characters.
Feels good to be back 🫶
An excellent continuation of the series. The voice acting is phenomenal, the characters are a joy to interact with, and the puzzles are just good fun. I was unnerved by the ending in the best possible way. If you have the remotest interest in detective games, play this one!
A stunning sequel to Tangle Tower, the characters were so well written and the puzzles were the highlight of my playthrough
Шедевр. Анимации, история и интерактив, все сделано на высоте
Otro juego increible de Grimoire, super recomendado.
The mermaids mask is a great and entertaining game with lots of moments where it had me guessing who done it. It was smooth gameplay, i had no errors or bugs at all during my gameplay and the puzzles were interesting and if i ever got stuck it always threw in some tips to help solve it. I finished this game in two day meaning it was so much fun i couldn't put it down (it was midnight when i had to quit to finish it the next day) i Loved the characters, i loved the story, i loved the mystery... Its not required to play the last two games in the series, You could play this game first and not really lose much in the story but if you don't play the last two games all your really missing is some conversations where they referenced a past case it only happens like i think 4 times but its not much of a loss, so thats great....
Very charming game, every character is charming and interesting. The story is an improvement over the last one, and the plot makes more sense in comparison. However, sometimes the character volume becomes very low or very loud for no reason, which makes it very hard to hear when playing with a speaker. Very funny meta commentary through Wireman, but I do look forward to the next installment if there is one.
Selling now
See how fast this game is selling right now — estimated copies and revenue per day from recent review growth.
Active players
Estimated daily and monthly active players (DAU/MAU) modeled from peak concurrency.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
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