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The Mermaid Mask

The Mermaid Mask

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.

Overwhelmingly Positive
$19.99-10%$17.99
Jul 16, 2026
Steam ↗
Reviews
2,217
Overwhelmingly Positive
Positive
99.5%
2,207 positive
Followers
5.1K
Est. WishlistsestiProxy: followers × 12 (industry heuristic)
61.5K
Est. OwnersestiBoxleiter method: reviews × 32
70.9K
Est. RevenueestiEst. owners × ~62% of list price
$879.3K
Price (US)
$17.99
-10% off
Release
Jul 16, 2026
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

Reviews
100%
Overwhelmingly Positive
2,217 total reviews
2,207 positive (99.5%)10 negative
Features
Custom Volume ControlsDualShock Controller SupportDualShock Controller SupportDualShock Controller SupportDualShock Controller SupportFamily SharingFull controller supportMouse Only OptionPlayable without Timed InputSave Anytime
Tags
2DAdventureAtmosphericCasualCrimeDetectiveDialogue HeavyFunnyHand-drawnInteractive FictionInvestigationLore-RichMysteryPoint & ClickPuzzle
Developer
Publisher
Platforms
Estimates — owners use the Boxleiter method (reviews × 32), wishlists proxy followers × 12, revenue uses ~62% of list price × est. owners. These are rough industry heuristics, not official data.
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