
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
Felicia! When I catch you Felicia! Another great continuation in the series. This game really benefits from you having played the pervious one, Tangled Tower, however it's not necessary but there will be clear easter eggs you won't get. And the seemingly continuation of the mystery around Felicia is something I hope they keep going. There's many clever things to be done with her character and the mystery around her and I'm excited to see where the devs go with it should they choose too.
I LOVED tangle tower and I was so excited to know SFB was making another similar game! And it's just as amazing as I imagined!! It has all the pros of the last game - incredible orchestral soundtrack, unique, memorable characters, enthralling story, creative puzzles - and somehow makes it even BETTER with new ways to interact with evidence, even more commentary from the suspects, and plenty of callbacks to the previous games. It was so much fun trying to piece together all the connections and what it could all mean. But even without any knowledge from the previous games, this one still presents a captivating mystery that stuck with me even when I wasn't playing. SERIOUSLY recommend!
Great artwork, voice acting, story, and gameplay!
好玩!
So worth the wait!
Puzzles make a lot of sense and dialogue/characters are all great. If you liked tangle tower even a little you'll love this
Music, amazing. Voice acting, amazing. Design, gameplay (for the most part) all amazing. The story? So much doesn't add up and so much left unanswered or not satisfactorily explained. Some of the explanations make no sense, others the story POINTS OUT, then never follows up on. It feels like so many story plots and concepts were abandoned half way through or they changed their mind and just... kept the original bits, but then changed things later in the story. Continuity is a mess, story beats are a mess, and nothing makes sense if you think about it for more than a minute. We started by being so excited as we played (even mapping out characters, the whole Pointer/Fellow/Remington family trees and writing out any names we recognized or wanted to follow up on) but as things continued we got more frustrated with how nonsensical everything is, especially for what happened when (in the past and in the actual what happened before/during/after the murder). I wish they has spent a little more focus on making everything fit together, but much like Tangled tower, the actual reasons for the murder and motivations of people involved were quite lack luster. Still not a bad puzzle game, just don't play specifically for the story or you may be disappointed.
An amazing addition to the series!
너무 재밌었다 그리고 인어 가면 무섭게 생겼다
十分喜欢前作《tangle tower》,这次的《人鱼面具》延续了前作的解密+推理风格,在美术设计上更是一如既往地引人入胜!新加入的3D建模的玩法让我感到惊喜,全方位的观察线索并利用多视角推理真的很有意思!故事设计和结局很有新意,推理部分逻辑缜密,十分喜欢格里普和人鱼一起走了的这个结局!辛西娅做了我想做的事!上一部让凶手逃跑了真是气的人牙痒痒!
Related
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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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