
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 1483 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Fantastic art and voice acting, compelling mystery with multiple intertwined storylines. You can tell that this game is an act of love by the quality in every bit of it. Lovely making of art so you can see the process as well. Highly recommend
[spoiler]You would do well to not underestimate the things one will do for giantess mermaid GF[/spoiler]
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
A beautifully crafted point and click with witty dialogue, intriguing mysteries, and narrative that keeps you hooked. An absolute joy to play.
I wanted to write a whole essay of a review, but I had to stop myself. This is downright one of the best written and best made adventure games of the last decade. I am not kidding. The characters are amazing, the writing is absolutely top notch, with a level of depth and content I have rarely seen before. The whole game is constantly intriguing without being filled with pointless red herrings or false leads. I've played the previous two games in the series as well, and each one has been better than the last. Huge congratulations to the dev team!
很棒的推理游戏!比前作《缠结塔》更好玩,整个故事的逻辑和完整性好像也优秀得多。关键还有好听的全语音、夯爆的美术、引人入胜的音乐、上大分的本地化、无处不在的细节、各种主角的小幽默,整个游戏流程非常令人享受。谜题方面比较简单,推理部分的提示做得也不错,实在不行直接穷举也没有什么惩罚(甚至有一些意料之外的语音之类的)。强烈推荐给侦探游戏爱好玩家。 就是希望能给手柄操作再优化一下,倒是能理解鼠标模式很多情况下还得用,但是至少可以给固定按钮分配一些按键之类的。 9.5/10
A Fantastic edition to the detective grimoire series and triumphant return for sfb games after lots of waiting i am totally satisfied with the depth of puzzles and balanced difficulty just enough i could eventually firgure out most everything without help. The story is well written with nice call backs to the previous game and an at least for me satisfying ending.
no notes, buy it now
제발 플레이해줘요... 제발 사서 플레이 해주세요.... 죽기 전에 3편을 보고 죽어야겠어요..... 일부러 스포 안 보고 플레이 했는데 정말 재밌었습니다. 개인적으로 탱글타워도 재밌게 했었는데 머메이드 마스크 오래 기다린 보람이 있어요 정말.
Loved it!! I’ve been looking forward to a new game since I first played tangle tower a few years ago, and this did not disappoint. The characters, art, plot, and soundtrack were on point. There were a lot of fun easter eggs connecting this game to the previous ones in the series, and it was all around a very smartly designed game
I loved this game. I'm recommending it to everyone I know, whether they like puzzle / detective / mystery games or not. What a fun story! Amazing art and voice acting as always! I know the creators said they're taking a break, which is very well deserved, but I cannot wait for them to release another game. Mermaid Mask was so well done, I'll be talking about it to anyone who stays near me long enough to listen.
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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