Game · SFB Games
The Mermaid Mask
- Steam Deck Verified
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.
Before you buy
- Redeem on
- Steam clientPC: Windows, macOS. Needs a free Steam account.
- Activates in
- Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.Activates on accounts registered in the EU, EEA, Switzerland and the United Kingdom.Will not activate on accounts registered in North America, Asia, Latin America or Oceania.
- You get
- A digital activation keyStandard edition. No disc, no box.
- Delivery
- To your account and by emailDelivered to your account and by email once it is ready. Some orders get a short manual check first.
Trailers and screenshots
About this game
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
Description, images and details are taken from this product's Steam page.
Details
- Developer
- SFB Games
- Publisher
- SFB Games
- Released
- 16 Jul, 2026
- Genres
- Adventure, Puzzle, Indie, Casual
- Runs on
- Windows, macOS
- Activates on
- Steam client, Europe and UK
- Interface
- English, French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese, Spanish - Latin America, Traditional Chinese
- Full audio
- English
- Controller
- Full controller support
- Single-player
- Steam Achievements
- Full controller support
- Custom Volume Controls
- Mouse Only Option
- #category_playable_at_your_own_pace
- Playable without Timed Input
- DualShock Controller Support
- DualShock Controller Support
- DualSense Controller Support
- DualSense Controller Support
- Save Anytime
- Touch Only Option
- Steam Cloud
- Family Sharing
System requirements
Windows
| Component | Minimum |
|---|---|
| OS | Windows 10 or later |
| Processor | Intel Core i3 or equivalent |
| Memory | 2 GB RAM |
| Graphics | Intel HD Graphics |
| Storage | 1 GB available space |
macOS
| Component | Minimum |
|---|---|
| OS | Mac OSX 10.12 or later |
| Processor | Apple M1, or Intel Core i3 or equivalent |
| Memory | 2 GB RAM |
| Graphics | Apple M1 or Intel HD Graphics |
| Storage | 1 GB available space |
Activating it on Steam client
- Open the Steam client and sign in.
- Choose Games in the top menu, then Activate a Product on Steam.
- Paste the key and confirm. It appears in your library.
The key is listed for the Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom. region. Read how regions work before you buy.