
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 1487 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
A big improvement in basically every way over the last entry to the franchise which was already an incredible game.
very fun! mechanically satisfying as well. loved the art and the 3d models.
Berry good game play it play it play it play it
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
I absolutely loved this sequel. The character and location designs, the storytelling and the unraveling of the mystery and the murder and the connection to the previous game Tangle Tower even the Detective Grimoire game. The developers really did a phenomenal job. The puzzles are a bit harder and some of the directions were a little unclear but it didn't compromise the game playing experience. Well done SFB Games!
As a fan of many of the SFB Games ...well, [i] games [/i], I was beyond excited to hear about The Mermaid Mask coming out!! Its safe to say that it did NOT dissapoint in the slightest! The characters were so fun and I loved the inclusion of the 3D elements! Turning and shaking clues was one of my favorite things to do hehe (that and playing around with Dirks phone) The little 3D models of the suspects were very reminiscent of Crow Country, and I loved the new Suspicion intro!! The ending left me flabbergasted and craving more, but it was a perfect ending I think. Anyway, 100/10 loved every part of it!
I think its important to put into context I have now played, The Mermaid Mask, Tangle Tower and Detective Grimoire in a row to make this review. If you want the short answer to how I feel about these games I loved them! Honestly there so genuine and funny its honestly lovely. To get into the nitty gritty though, The characters were amazing especially in this one I have some criticisms for the tangle tower characters but really that's about it for the whole series and consider I have listened to every line of Dialogue in all THREE. If your curious I disliked talking to Felix Fellow and Professor Pointer, Like I don't mind that they suck as people but there just not very fun to talk to. I think Zacharias Zephyr is probably a bad person or a deeply troubled one but I don't find him grating as a example. If there was one person I do have no feelings towards besides he's kinda funny its folder. He is kinda funny tho. kinda... THE ART IS PEAK OMG, the way the people move and stretch and squash in these games is just incredible its a work of art. If you love these games I seriously recommend reading through the concept art when your done. I mean chefs kiss you are some of the best artist i've ever seen I wish I could just pop through the screen and hug some of these people you made great work. The story's kept me guessing throughout I would say the first one had the weakest story but its budget is quite a bit less so its forgivable I had the bad guy in that one pegged in less than a hour. The Second one kept me guessing and interested throughout. When I say that I do mean heavily invested I loved it. but the mermaid mask is a HUGE highpoint this is STORYTELLING I loved it. It was so fun and kept me thinking throughout so many good puzzles so many good lines just exemplary. But Really I suggest playing through the games! it was a great time! Ill be sure to be day one for a sequel if they wana make one! 10/10
画风很赞 解密也ok 好玩爱玩
a very good and intruiging storyline, with fun and challaging puzzles. sally and grimoire are as funny as ever, and the new cast of characters are even more funny and intresting than tangle tower!
Lovely point and click mystery game crafted with lots of love and care from the devs. Very fun characters, great voice acting and music, gorgeous art, and a thrilling mystery! I already loved Tangle Tower and the other Detective Grimoire games and this felt like a huge improvement in almost every way, and I really hope to see Grimoire and Sally go on more adventures in the future! Highly recommend this game to any fan of the genre!
老粉立刻购买!已经在期待下一作了!! 这一作故事感觉成熟了很多。角色的深度比上一作要好,角色动机也更加能说服人了。 [spoiler] 只是我有点奇怪为什么每次犯人都溜了啊?虽然说这一作更加像是生死未卜,但是也是给这混蛋达成遗愿了啊?上一作的penny也是成功逃跑了。。。不会这些人都还有后续把。。 另外freya和妈妈真的不能整个番外或者if或者别的什么吗?这对母女真的太好了,充满冒险精神但是又善良又勇敢,怎么就都给写死了。。。而且妈妈甚至怎么死的都不知道(还是说其实也有可能没死吗?) 感觉上一作的故事受锈湖的影响比较深,但是又不想那么黑深残,导致最后结尾收的就差了一点。 另外前期每个物品都要和每个人聊一下真的蛮累人的,特别是像录音烟斗这种普通聊只能聊外形不能聊录音内容属实有点鸡肋,下一次如果是没有对应线索的道具聊天就做的简短一点把 个人很喜欢这作美人鱼的塑造,非人感很强,虽然有人形,但是故事完全没有强调人的部分也没有美的部分。真的很怕来点什么绝世大美女鱼,然后因为色心而发生凶案。。 另外很喜欢本作再怎么执着的情感纠葛也不会用性缘去解释,不会没事就来一个爱的死去活来真的挺好的 格里普和莫图加真的很像是在第一次出海(跑团)的时候直面美人鱼然后san值都掉的差不多的调查员www [/spoiler]
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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.
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