An impossible locked-room murder. Captain Mortuga lies dead beside an ancient cauldron aboard the world strangest submarine, crewed by sketchy suspects. A handcrafted point-and-click from the creators of Tangle Tower and Crow Country.

Ranked #20 in the Steam 250 quarterly top 200 with a 99% positive rating from 2,547 reviews.

Key features

A genuine locked-room mystery

Found alone in a locked room with only a stone cauldron to suggest how he died. Detective Grimoire and Sally have to piece together what actually happened.

Suspects worth suspecting

Some say the captain was an immortal time-traveller, others a vampire cursed to stay beneath the waves. The submarine crew are all eccentric and all plausible.

SFB Games pedigree

From the studio behind Tangle Tower and Crow Country, with the sharp humour and handcrafted puzzle design those earned their reputation on.

Where to find The Mermaid Mask

• Available now on Steam — $17.99