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.

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

• Offline play enabled
• 1 player
• Accessibility features (5)

Accessibility Features

• Audio

  • Volume Controls

    You can turn down and mute individual audio volumes.

• Subtitles and Captions

  • Subtitles (Basic)

    The game includes subtitles for the main story and main characters only.

  • Clear Subtitles

    Subtitles are presented in a way that helps make them easier to read.

  • Large Subtitles

    Subtitles are presented using a larger font size to help make them easier to read.

• Gameplay

  • Game Pausing

    You can pause the game at any time during gameplay or cinematics (offline play only).

• Platform: PS5
• Release: 7/17/2026
• Publisher: SFB Games Limited
• Genres: Adventure, Adventure
• Voice: English
• Screen Languages: Chinese (Simplified), Chinese (Traditional), English, French (France), German, Italian, Japanese, Korean, Portuguese (Brazil), Russian, Spanish, Spanish (Mexico)