
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% | — | $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 1510 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
About 9 hours of gameplay for one casual run through. Likely more if you aim to 100%. Good price point, especially on sale. An incredible addition to the franchise. The 3D clues were not only a simple increase in specs, they were integrated into the mystery-solving at several points. The characters were lovely, the story engaging. (And more coherent than TT--in my opinion, at least.) As always for this series, the music and voice acting (as well as the dialogue writing) were spectacular. So were the environments. The mystery was well-written, and had me second guessing until the very end. The reveal was perfect. This game, while dealing with the typical human motivations, does have a touch of Lovecraft to it. Likely not enough to sway purchase one way or another. The callbacks to BOTH previous games were delightful. It's unobtrusive for those just getting into the series, but a very nice nod towards those who have played all three. It also serves well to make the world feel more cohesive. Deeply hopeful a fourth game will be released one day where we can continue to follow this growing web of characters.
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $1M | 993 | 87% | $34.99 | |
| $1M | 2K | 58% | $19.99 | |
| $1M | 1.3K | 40% | $19.99 | |
| $1M | 1.5K | 73% | $19.99 | |
| $1M | 3.1K | 92% | $13.99 | |
| $1M | 1.5K | 81% | $19.99 |
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $1.8M | 6.8K | 95% | $19.99 | |
| $607.9K | 1.8K | 92% | $14.44 | |
| $83.2K | 222 | 84% | $15.99 | |
| $37.1K | 256 | 89% | $9.99 | |
| $13.2K | 109 | 95% | $8.99 | |
| $3.7K | 15 | 67% | $14.99 |
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
An absolutely stellar addition to the Detective Grimoire series that builds and improves upon the foundation set by Tangle Tower whilst addressing my main criticism of that game, that being that all of its wonderful characters and world building were written in service of an illogical whodunnit. Trust me when I say that this game's murderer is vastly superior to the one in the previous entry in every way, so if you were disappointed by Tangle Tower for that reason or even for the game's short length, I implore you to give The Mermaid Mask a try and be amazed at how well SBF Games knocked this particular whodunnit out of the park.
A very high quality point and click adventure game with very impressive voice acting and animations, and may I add some very good bad puns
It's clever, it's beautiful, it's hilarious - a knockout game so far!
The Mermaid Mask is an absolutely fantastic game. If the demo or trailers are intriguing to you, do yourself the favor and pick up the full game. I loved playing the predecessor game Tangle Tower so much on Switch, I replayed it on Steam a while later. I did not expect The Mermaid Mask to be significantly different gameplay-wise, but I am happy to report that it is [i]even better.[/i] A few notes: - Incredible character animations, silly writing, and impeccable voice acting - Fun puzzles (some more engaging than others, but overall really enjoyable) - Compared to the 2D clues in Tangle Tower, clues are now 3D and contain more hidden info - Art Gallery with fun developer comments Small critique: It would be nice if this game had a chapter select or rewind type feature once the story is finished. Some achievements are missable once you start the final chapter, and it can take a bit of time replaying the game simply to choose a different dialogue option.
These games are such gems. I loved Tangle Tower but was a bit saddened to see how rushed the ending was. The Mermaid Mask fixed every issues I had with its predecessor. I recommend playing Tangle Tower first though as this game does spoil the fate of two of its characters. Looking forward to the next installments it was a lot of fun with jokes that hit and an artstyle to admire.
너무.. 너무 재밌어... ㅠㅠㅠ
This is one of the best "detective" games I have ever played. The writing, the voice acting, the gameplay loop, the animation and art....all 10's across the board
So worth the wait!
As with all the Detective Grimoire games, this was delightfully fun! The characters are all compelling and entertaining, the art is fantastic and so lively, and the story really gripped me from the beginning. And the voice acting was fantastic! I can only hope for more Grimoire and Sally in the future! Thanks so much to the devs and everyone involved with this game!
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