
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
great story, kept me on the edge of my seat
It's absolute perfection. No notes. You guys are doing something really, really special with this series, which was obvious in Tangle Tower, and undeniable after this installment.
I love this game!!!! If you like detective games do it! I'm not afraid to say it's my favorite from SFB, and they created some great indie gems. I'm honestly in love with the mood and art of the game. Honestly the ending was awesome. I think they brought the experience with their other projects all into this game. Even Crow Country with the moody scary eldrich horror theme. It's not about it of course but it's part of the sauce that makes this so good. Guys you did great, all the work was worth it. I'm in awe!
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
This and every other Pro feature is free until October 20, 2026. A free account is all it takes.
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
You saw the trailer already, the production value is great! The writing is fun! The voice-acting is top-notch! The mystery was good, stop reading this and go play it! There's even a demo if you for some reason still can't tell what this is.
Mermaid mask Basically, another step up from Tangle Tower. Same design with the added 3D models here and there, the story does go back to a more fantastic setting, a thing that Tangle Tower missed. The duo has a more dynamic exchange and that was a pleasing surprise. Apart from that, it keep all of its forte: great character design, engaging writing and excellent voice over. One thing that (again) Tangle tower was a bit weak was it’s ending which was a bit rushed and lacked a bit of impact. Mermaid Mask’s ending was…impeccable: from its rhythm to it’s somewhat bitter and open conclusion. OST is also full of great track and consistent in term of quality. Unless Adventure game are something you abhorred, Mermaid Mask is definitely a Must have.
정말 잘 만든 추리 게임입니다. 스토리도 흥미롭고, 등장하는 캐릭터들도 각자의 개성이 잘 살아 있습니다. 캐릭터들의 대사와 애니메이션 역시 매력적이라 전체적으로 여유롭게 즐길 수 있었고, 덕분에 스토리 진행과 직접적인 관련이 없는 요소들이더라도 하나씩 살펴보는 재미가 있었습니다. 게임의 진행 방식도 비교적 친절하게 구성되어 있어, 스토리를 따라가면서 크게 막히거나 헤매는 일은 거의 없었습니다. 추리 장르에 익숙하지 않은 플레이어도 부담 없이 즐길 수 있는 작품이라 생각하며, 강력히 추천하는 게임입니다.
It's a decent game, but not a detective game. At all. So if that's what you want to play, this is not for you. It's a point-and-click visual novel. The story is interesting and the characters are fantastically written. Absolutely horrible UX design though, why is ESC controlling full-screen? Why do I have to click to open the inventory, to open the settings, to return to the main menu, to exit the game? It should be ESC > Quit to desktop. Puzzles I found quite tedious and not that enjoyable. 10/10 for story, 6/10 for gameplay. I had a few bugs throughout the game that caused it to freeze during the accusations (so I had to ALT-F4 and restart the convos) and stopped the dictaphone from playing audio back to me, but I seem to be the minority in experiencing bugs. Overall, 7.5/10. Clearly has had a lot of love and care put into the game, and you can really feel that.
수작은 이런걸 말하는 거지
so good!!
O ponto principal do jogo é a história do assassinato do capitão Mortuga, e o jogo te deixa apreensivo e curioso para saber o que aconteceu com ele, cada pista que você pega no jogo (que são bastante) são importantes para te descobrir a trama completa. O design dos personagens é incrível, junto com uma boa narrativa deles que faz com que você se conecte minimamente com cada um dos suspeitos do crime. Ótima dublagem dos personagens e que combina perfeitamente com os personagens do jogo. The Mermaid Mask é um ótimo jogo para que curte uma vibe mais detetive nos videogames.
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.
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 | 80 | 95% | $8.99 | |
| $3.7K | 15 | 67% | $14.99 |
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $1.1M | 3.6K | 81% | $9.99 | |
| $1M | 871 | 86% | $34.99 | |
| $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 |