The Mermaid Mask: A mysterious murder aboard the world's strangest submarine

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An apparently impossible murder has come to light: Captain Mortuga is found dead beside an ancient stone cauldron inside a locked room aboard the world's strangest submarine. This is the premise of The Mermaid Mask, the latest point-and-click detective game from SFB Games, the studio behind Tangle Tower and Crow Country.

The Mermaid Mask (Image source: Steam)
The Mermaid Mask (Image source: Steam)

A locked-room murder mystery beneath the sea

The Mermaid Mask takes place in the dark waters off the coast of a long-abandoned fishing town. Players board The Mortuga Submarine, one of the world's most unusual submarines, to investigate the mysterious death of its eccentric commander, Captain Mortuga. Strange rumors surround him, with some believing he is an immortal time traveler, while others insist he is a cursed vampire forced to hide beneath the waves.

The captain's body is discovered inside a locked room, lying beside an ancient stone cauldron shrouded in mystery. Players join returning detectives Detective Grimoire and Sally as they piece together clues to uncover whether the truth lies behind an ancient curse unleashed from the cauldron, a conspiracy involving one of the submarine's eccentric crew members, or something even stranger hidden beneath the ocean.

Investigating aboard The Mortuga Submarine (Image source: Steam)
Investigating aboard The Mortuga Submarine (Image source: Steam)

Classic point-and-click gameplay with interactive 3D clues

The game preserves its classic point-and-click adventure gameplay while introducing several modern interactive features:

  • Examine 3D evidence: Every clue collected is presented as a fully interactive 3D object that players can rotate, inspect, and examine from every angle to uncover hidden details.
  • Fully voiced cast of suspects: Detective Grimoire and Sally question a cast of eccentric suspects aboard the submarine. Every character features full English voice acting, bringing their personalities and suspicious behavior to life.
  • Distinctive hand-drawn visuals: Explore every corner of The Mortuga Submarine through beautifully illustrated environments where even the smallest details may conceal vital clues or visual deception.
  • An orchestral soundtrack: The original score is performed by the Budapest Art Orchestra, creating a suspenseful, haunting atmosphere that enhances every stage of the investigation.
Collecting clues (Image source: Steam)
Collecting clues (Image source: Steam)

Developed and published by SFB Games, The Mermaid Mask is an adventure, casual, and indie title set in the Detective Grimoire franchise. The game launches on PC and Nintendo Switch on July 16, 2026. Fans of the clever puzzles, witty storytelling, and intriguing mysteries found in Tangle Tower and Crow Country can look forward to another unforgettable investigation deep beneath the sea.