
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 →
Media

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
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
Engagement
Hours played at review time, across 200 reviews with recorded playtime.
Reviews
Themes across 200 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
I absolutely loved Tangle Tower, and The Mermaid Mask brought everything I loved from the previous game to this one and then somehow managed to even improve on it. The soundtrack is amazing, the visuals are striking, the characters are interesting, and the voice acting is top notch. One of my favorite games this year and I hope to see more added to this growing world of Detective Grimoire.
Antes de mais nada, gostaria de exaltar a arte dessa série. O design dos personagens e as animações são IMPECÁVEIS!! e acredito que ainda melhores que no Tangle Tower, Além disso, agora temos modelos 3D para as pistas e outros objetos, mas a texturização conversa perfeitamente com o estilo de arte. Uma direção de arte incrível! Nota 1000000000/10 Enfim, para a review geral. Eu tinha grandes expectativas para essa sequência, visto que o predecessor é um dos meus Murder Mystery favoritos, mas posso dizer com tranquilidade que ele fez jus ao legado do Detetive Grimoire. Puzzles muitos divertidos, personagens cativantes e um mistério muito bem construído e envolvente. Adorei conversar com cada suspeito, em especial a Symmetry que contribuía ainda mais para o mistério com o espetáculo de ilusionismo, todo muito bem desenvolvidos e particulares com seus trejeitos e passado. Definitivamente um dos meus jogos favoritos e, não querendo dar uma de Van De Peer (quem jogou irá entender rs), mas espero que continuem fazendo sequência para essa séries!
A well written game with great characters and fun puzzles.
Great characters, great voice acting, great design, great storyline, great game.
Just as compelling as the first two Detective Grimoire series (if not more). The story is captivating, puzzles are fun, and the artworks are fantastic. Can't wait for the next game.
Amazing. Developers, don't think I didn't catch the fourth wall break done by Grimoire (so cool. I laughed out loud). But worry not because this game did exactly what I assumed it hoped to do and that was deliver a game almost better than the first one. Don't get me wrong the first game was great, but this one was so eerie and fantastical but also the animations?! Thank you developers, I will always appreciate the fact that I stumbled upon this game randomly and ended up falling in love. 10/10. This was work made with love.
若是喜愛Tangle Tower的玩家可以放心購買,品質一樣優良。 最後猜測犯人時,我有被誤導這點我很喜歡,故事上比前作好一些 每位角色都非常有魅力,我尤其喜愛小辛跟沃曼這兩個角色,但同樣也跟前作一樣帶給玩家一個未完結的感受。 系統上也比前作現代化了許多蠻不錯的,例如 線索能翻閱當問嫌疑人時也可以指定線索的某部分來去詢問這點,還有部分獲得物品的3D化展示及互動,都是使這款遊戲讓玩家更有參與感,總之是有所進步的佳作。 (有前兩代的彩蛋)
jogue o primeiro jogo antes desse para pegar algumas referências.
Good game
Wonderful mystery-adventure game. Loved the voice-acting and how every character had a unique reaction for every clue; none of that "I don't care about this" repeat dialogue.
Related
Related
Trends
Steam followers (game-group members) tracked daily from when we started recording.
Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
Audience
Audience
Games most often reviewed by the same players — an audience-affinity signal from our review sample, not full ownership data.
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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