
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 | 2.8Kreviews | 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 1520 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Spectacular game! I absolutely adore the characters, the art style, the voice acting, the story and the mystery! I've been waiting (im)patiently ever since I finished Tangle Tower, and this game does not disappoint. I'm not done with the game yet, but am too excited about it, not to share. I had one hiccup so far, where the game stopped reacting. Had to close the game buy no grogress was lost, the autosave feature is very diligent.
A good sequel to Tangle Tower.
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 | 2.7K | 60% | $16.99 | |
| $1M | 584 | 87% | $49.99 | |
| $1M | 1.6K | 87% | $19.99 | |
| $1M | 2.9K | 79% | $9.99 | |
| $1M | 832 | 81% | $44.99 | |
| $1M | 1.1K | 67% | $29.99 |
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 | 291 | 87% | $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
The game is amazing!!! it is as good as Tangled Tower and has an even better story!! No complains! if you liked tangled tower you are going to love mermaid mask!!!
Super fun and i love all the puzzles! Good story plot and fun characters! There are still quite a few bugs in the game now so i had to restart after about 5 hours of game play. But the are getting them fixed so it'll run smoother. Lots to do and i love how long this one is
Amazing, I loved every bit of it. Ending is better explained than in tangle tower. I am very mad that I finished it.
Großartig. Toller Plot, nette Rätsel, Gutes Voice-acting, Werde es sicher noch mehrmals spielen.
good
From the writing, voice acting, art, music all the way to the animation and puzzles - you can feel the heart put into this game. I loved my time with this new Grimoire adventure.
Incredible voice acting, art, and design. Most of the game is dialogue, and the amazing voice acting really helps you pay attention to the story and pick up clues while keeping you entertained and engaged. The mystery is very satisfying to solve, though some of the puzzles could have been made more challenging.
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.
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.