
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
Ho davvero apprezzato questo capitolo della serie, soprattutto per la storia che ritengo sia la migliore finora. Davvero consigliato!
Previous titles were great but they did a wonderful job with this one. The story was engaging, everything from the voice acting and humour to the music was stellar. I liked most of the puzzles but there was one that needed a bit of adjusting to get it to register properly. Hope they get the chance to make another game in this series.
Media

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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
Loved it! Great graphic design. Even greater sound design. Masterful writing both in story and character flavors. And underneath it all a supersolid, no non-sense point&click adventure system consisting of locating characters (suspects), finding their relationships with other characters and shoving clues in their face to progress the plot. Some might argue its too simplistic and rigid... It's not: it's a framework that provides some basic rules but it's unintrusive enough to let music, writing and drawing take the lead and letting the game to constantly be more than the sum of parts.
Tangle Tower was an excellent game, so it's a testament to SFB that this game was somehow even better. Beautiful art, genuinely funny dialogue, and an engaging story with really good twists. I've already been recommending the Detective Grimoire games to all of my friends, but will be redoubling my efforts after Mermaid Mask.
Really good!!
Engaging storytelling, excellent voice-acting, fun puzzles. Expect 14 hours of fun detective adventuring.
I highly recommend this game! The gameplay was very satisfying, the mystery fantastic, and the character designs and personalities were so engaging - I just could not put it down! I have been a fan of the Detective Grimoire franchise since the 2007 flash game, and each instalment of this series has been better than the last. There were so many fun easter eggs in this one too, I can't wait for the next instalment!
INCREDIBLE game! I first found Detective Grimoire and the Secret of the Swamp just looking for point and click games. I’m so happy that the series has continued! Memorable characters, engaging mysteries, fantastic pacing and world building. This game really stepped things up with 3D clues, giving you lots more to explore. 10/10, highly recommend! And if you haven’t played the other games too, do that! The ongoing world building that happens on the periphery is one of my favorite parts about the series.
Incroyable dessin, histoire et enquête au top. Mais énigme trop facile
除了一些小解密更血压之外叙述完全升级
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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| $1.8M | 6.8K | 95% | $19.99 | |
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|---|---|---|---|---|
| $1.1M | 3.6K | 81% | $9.99 | |
| $1.1M | 1.3K | 90% | $19.99 | |
| $1M | 1.7K | 63% | $19.99 | |
| $1M | 2.9K | 89% | $14.99 | |
| $1.1M | 7.7K | 94% | $12.99 | |
| $1M | 2.6K | 96% | $11.99 |