
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 240 reviews with recorded playtime.
Reviews
Themes across 240 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 really enjoyed tangle tower and was eagerly anticipating this one. And it was worth the wait and delays - the mystery was engaging and I really wanted to know what was up with everyone at each point of the game. And the denouement was incredibly satisfying, I loved that moment just before where the evidence finally came together and I realised 'right it's THAT person, it couldn't be anyone else.' But what made that moment particularly good was how interesting and unique all the characters was, they all had depth and their own stories, so it was never super obvious (up until it was meant to be) exactly who the culprit would be. Y'know, the way a good mystery story is meant to be written. And the voice acting was great, the cast really added to everyone's personalities so well. I adored playing this and would highly recommend it to anyone hoping to sit down for a few hours with a good mystery.
제작진이 잠수함에 갇혀서 후속편을 계속 만들어주셨으면 좋겠음
As someone that played the series all the way back when it started as a flash game on newgrounds, I was thrilled to see it make a return once more. (especially when I noticed it had been on my wishlist for several years, there were times I feared it had been forgotten.) And what a triumphant return it is, the voice work is immaculate, the music manages to recapture the enchanting feel from the previous title while adding in new elements that perfectly get you into the mood and understanding of this new cast of characters. Character dialogue is serious and forboding, but also just silly and incredulous enough to keep the tension and pressure from mounting to great to early. Speaking of the cast, without being spoilery, everyone is SO compelling, even with the brief snippets we get of some, SYM is a little angel bless her soul, and Cornelius is a gentleman and a scholar. The writers and the artists and the modellers, EVERYONE did such a good job of telling such a rich story about these people on this ship, the history of the place and how they all came to be where they are. The story is kept rather tight, with a mostly sandbox approach where you freely look into what you wish in any order. The plot progresses pretty logically and there are only 1 or 2 nagging plot points that bug me, with many others side tangents being gratefully welcomed as world building. Espeically grateful are the several moments where the player is allowed to input their interpetation of the meaning or intent of an event or symbol. Indeed, while I'm sure many people would praise a game for keeping such tight focus, as a longtime fan I am left wishing there had been a little more, especially in regard to the dual protaganists of Grimoire and Sally, while they comment on things throughout the game, and even make references to past installments and characters, I can't help but feel frustrated with how little they have to say to each other, ABOUT each other. We are given such comprehensive looks into the childhoods, past lives, and motivations of the suspects yet the player is given disquieting little information about the characters they play as, what are their motivations? How did they get here? What is their living arangements like? Is is becoming a long running issue as Tangle tower had a simlar issue of just dropping the protaganists into the mystery with little fanfare or explanation of who these protaganists are. This game is wonderful and cannot be recommended and praised enough, but as a series I find it disconcerting how little a glimpse we get into the titular Grimoire outside of offhanded remarks and easter egg callbacks.
Good game, good buy, good play. GO BUY IT.
전작 탱글타워를 스트리밍으로 결말까지 봐버려서, 구매만 하고 실제 플레이는 제대로 즐기지 못했던게 아쉬웠습니다. 그래서 이번엔 스포 당하기 전에 빠르게 결말까지 달렸는데 탱글타워 재밌게 하신 분은 후속작도 충분히 즐기실 수 있을 것 같습니다! 전작의 내용을 몰라도 플레이에 지장은 없는 정도이나, 전작 인물들이 지나가듯이 언급은 되기 때문에 알고 보면 반갑기는 합니다. 저는 조금 헤매기도 하고 했지만, 이런 플레이를 잘하시는 분들은 저보다 훨씬 빨리 클리어 가능하실 거예요. 추천합니다!
I've always loved how this series blends the supernatural with a mundane murder case into a neat little story. At first, you can't really see how these elements fit together, but the more you play, the more seamlessly everything mixes. The art style holds up incredibly well from the last game, and the cast is both likable and fun to interact with. Plus, there are no depictions of violence, making it a cozy detective game that everyone can enjoy!
Loooved this game. Length of game is significantly greater compared to the other Grimoire games (took me two games to try to get every little thing) and greatly improved the story since last game. Characters are great and end was satisfying. Only thing I'd like is a chapter select after the game is completed because you get locked out of precious chapters once you're done with the game and I don't want to play through 90% of the game to get one missed achievement. Otherwise an incredibly great game!!
[h1] En résumé:[/h1] J'ai passé un bon moment sur le jeu et je le recommande. [h1] En détails:[/h1] Le jeu propose une nouvelle enquêtes pour le Détective Grimoire et Sally. Cette fois-ci, ils se retrouvent à bord d'un sous marin pour élucider le meurtre à huis clos du Capitaine Mortuga. Il n'est pas nécessaire d'avoir joué aux premiers jeux du studio pour comprendre ce qu'il se passe dans celui-ci. Il n'y a pas d'horreur ou de jumpscare dans le jeu. [h2] Gameplay:[/h2] Le jeu est un point and click qui ressemble aux précédent jeux de la série. Le gameplay s'articule autour de trois élément principaux: - De l'exploration de scènes pour trouver des indices et des éléments clés, - Des phases de discussions/déductions - Des énigmes Le jeu est facile à pendre en main et le gameplay est bien adapté au style de narration. [h2] Scénario/histoire:[/h2] J'ai trouvé l'histoire plaisante. Le Capitaine Mortuga a été tué dans son sous-marin, il vous revient d'élucider le mystère de sa mort et de comprendre ce qui le lie aux différents personnages présents à bord. Les rebondissements d'enquêtes sont plaisants, le scénario est suffisamment bien écrit pour qu'on ne grille pas direct le coupable. L'écriture de spersonnages est plaisante. [h2] Son:[/h2] Les musiques sont bien choisies. L'ambiance sonore est également bien faite. Les personnages sont tous doublés en anglais, les acteurs réussissent une bonne perfomance. Je trouve que le doublage des dialogue rend les phases de discussions dynamiques et rajoute de l'émotion. On sent que beaucoup de soin a été apporté à l'aspect sonore du jeu. [h2] Visuel/Direction Artistique:[/h2] J'ai beaucoup apprécié le style visuel du jeu. Entre la direction artistique des personnages, les animations de ceux-ci (qui semble faite à la main) et l'ambiance visuelle du sous marin, on sent la maîtrise du studio de développement pour donner vie à son univers. C'est avec plaisir qu'on retrouve Sally et le Détective grimoire avec leur gimmick et leur humour noir. [h2] Durée de vie:[/h2] Le jeu se finit en une douzaine d'heure en prenant son temps. Le jeu peut se finir en 3h-4h en cas de succès manqués. A ce jour (19/7/2026) il n'est pas possible de sélectionner un chapitre à rejouer, pour rejouer une portion du jeu il faudra relancer une partie complète. La durée de vie est satisfaisante. Les succès ne sont pas difficile à obtenir. [h2] Technique:[/h2] [u]Sur mon PC principal: [/u] Le jeu tourne très bien et je n'ai eu aucun problème technique susceptible de gâcher mon expérience (sachant que je ne joue pas spécialement sur un OS supporté par les devs). [u]Sur le Steam Deck: [/u] le jeu met à profit l'écran tactile et les éléments d'interface ont une taille suffisante pour le Deck ce qui est bien agréable. Sinon il est possible d'utiliser les stick pour déplacer le curseur et la gachette droite pour "cliquer". Le jeu tourne sans problème du peu que j'ai testé sur le Deck (J'ai joué une vingtaine de minutes) [h2] Au final:[/h2] J'ai beaucoup aimé le, jeu, un grand merci aux équipes qui ont travaillé dessus. C'est du beau travail, on sent l'amour du studio pour ce genre de jeu et pour leurs personnages. J'ai très hâte de découvrir leur prochains jeux.
Very Charming. Gives a deep drive on point and click games. Point's in all the right direction's for a best follow up. Navigates you to a magical time. Get's the green light from me.
系列老玩家了,从沼泽案入坑,主要是好这口美术和配音,对剧情和案件要求不高。[b] 但是 [/b]这一作明显有进步,与前作缠结塔相比,角色不再局限于沾亲带故的一家人,角色形象和动机显得更丰富;与更早的沼泽案乃至网页flash版的马戏团案相比则有了更优秀的氛围和叙事,挖坑不填的情况也有所改善,显得完成度更高了,打完之后非常满意,[strike]不像缠结塔结局让人感觉“就这”??[/strike]特别是这一作的超自然生物要素平衡得比较好,没有特别强的违和感。很期待未来还会有新的作品!接下来要回头重新玩一下缠结塔,细品本作的进步了。
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.
Related
| Tesla vs Lovecraft | $390.9K | 1.2K | 90% | $14.99 |
| GLADIABOTS - AI Combat Arena | $390.8K | 898 | 89% | $14.99 |
| MINOS | $390.7K | 563 | 89% | $17.99 |
| Red Faction II | $390.7K | 1.3K | 52% | $9.99 |
| Arizona Derby | $391.2K | 667 | 76% | $18.99 |
| Conquest of Elysium 4 | $390.6K | 564 | 89% | $24.99 |
Related
| Euro Truck Simulator 2 | $421.6M | 932.6K | 97% | $19.99 |
| Human Fall Flat | $109.3M | 225.6K | 95% | $19.99 |
| American Truck Simulator | $103.7M | 194.2K | 97% | $19.99 |
| Slime Rancher | $73.9M | 155.5K | 98% |
| $19.99 |
| DAVE THE DIVER | $67.1M | 158.9K | 97% | $19.99 |
| House Flipper | $65.8M | 110.8K | 94% | $24.99 |