GAME OVERVIEW
Detective Grimoire is back, and this time, he’s diving straight into the bizarre—aboard one of the world’s weirdest submarines. Somewhere beneath the inky waters off a deserted fishing town, the captain of this strange vessel turns up dead in a locked room.
Locals spin wild stories about him—some say he jumped through time, others swear he’s a vampire cursed to the deep. The only clue? An ancient stone cauldron left behind at the scene. It’s up to Grimoire and his partner Sally to get to the bottom of it. Assassin’s Creed Shadows

You’ll work the case by poking around crime scenes, grilling a lineup of fully voiced suspects, and connecting the dots with any clues you dig up. Every object you find is modeled in 3D, so you can pick it up and really look at every angle—sometimes that’s the only way to spot what everyone else missed.
The whole mystery plays out inside the Mortuga Submarine. It’s not just a backdrop—think hand-painted rooms packed with secrets, quirky characters, and enough twists to keep you guessing. Every corner could hold the next big breakthrough, so paying attention pays off if you want to crack the case.
All the while, you get to enjoy an original orchestral soundtrack from the Budapest Art Orchestra, giving the whole investigation a moody, cinematic feel. With talented voice actors breathing life into every character, Detective Grimoire’s latest mystery blends sharp wit, oddball humor, and tough puzzles into an adventure that’s just as strange as the captain’s legend.
HOW TO DOWNLOAD
- Click the Download button below and you’ll be redirected.
- Wait for 5 seconds and then hit the blue ‘download now’ button. The download will start, so just hang tight.
- Once The The Mermaid Mask is downloaded, right-click the .zip file and select “Extract to The Mermaid Mask ”(You’ll need 7-Zip for this, get it here).
- Open the The Mermaid Mask folder and run the exe application.
- Have a blast playing! Remember to run the game as administrator. If you get any missing dll errors, check for a Redist or _CommonRedist folder and install all the programs in there.
SYSTEM REQUIREMENTS
- OS: Windows 10 or later
- Processor: Intel Core i3 or equivalent
- Memory: 2 GB RAM
- Graphics: Intel HD Graphics
- Storage: 1 GB available space
THE MERMAID MASK FREE DOWNLOAD
Click the download button to get this game free on your PC. This is the full game, so make sure to run it as an administrator.
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