Single-player games like The Mermaid Mask
Below are 10 single-player Steam games similar to The Mermaid Mask, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like The Mermaid Mask page.
Ranked picks
- 1

Tangle Tower
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Indie and Adventure with The Mermaid Mask.
Unravel a thrilling mystery by exploring a strange and twisted mansion, discovering curious clues, interrogating peculiar suspects and solving unique puzzles. Will you be able to uncover the secrets of Tangle Tower?
- 2

The Rise of the Golden Idol
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Indie and Adventure with The Mermaid Mask.
The Award-winning detective saga returns in this standalone sequel to The Case of the Golden Idol. Uncover the truth behind 20 strange cases of crime, death and depravity in the 1970s. The world has changed dramatically - the sins of humanity have not.
- 3

Broken Sword - Shadow of the Templars: Reforged
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Indie and Adventure with The Mermaid Mask.
The classic multi-award winning adventure "Broken Sword - the Shadow of the Templars" returns with glorious 4K visuals and iconic remastered audio, pitching intrepid tourist George Stobbart and fearless journalist Nico Collard into a journey of perilous adventures and ancient conspiracies.
- 4

Detective Grimoire
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Indie and Adventure with The Mermaid Mask.
Detective Grimoire has been called to investigate a murder. The owner of a small tourist attraction, seemingly killed by the mythical creature his attraction is based around... Explore the area, inspect the crime scene, grill suspects, solve puzzles, hunt for clues & uncover the secret of the swamp!
- 5

The Roottrees are Dead
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Adventure with The Mermaid Mask.
A genealogical mystery straight out of 1998. Scour the early Internet for clues, uncover hidden connections, and piece together the family tree behind the secretive Roottree Corporation.
- 6

TR-49
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Adventure with The Mermaid Mask.
A World War II computer. An archive of lost books. A world-changing secret. Narrative deduction meets audio drama, from the creators of Overboard!, Heaven's Vault and A Highland Song.
- 7

No Case Should Remain Unsolved
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Indie and Adventure with The Mermaid Mask.
Twelve years after Senior Inspector Jeon Gyeong's retirement, she is visited by a young police officer: a woman who pleads with her to reexamine Seowon's case. But with each uncovered memory, only one thing becomes clear: everyone in Seowon's vicinity was lying.
- 8

Duck Detective: The Ghost of Glamping
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Indie and Adventure with The Mermaid Mask.
You are the one and only Duck Detective, a depressed and recently divorced duck who must quack the case. Inspect evidence, make de-duck-tions, and solve this no-murder mystery!
- 9

Crow Country
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Indie with The Mermaid Mask.
The year is 1990. It’s been two years since the mysterious disappearance of Edward Crow and the abrupt closure of his theme park, Crow Country. But your arrival has broken the silence, Mara Forest. If you want answers, you’ll have to venture deep into the darkness of Crow Country to find them…
- 10

Haunt the House: Terrortown
Single-player alternative to The Mermaid Mask — playable solo, no multiplayer required. Shares Indie and Casual with The Mermaid Mask.
Haunt your way through town in the dead of night! Possess objects to scare people away from a museum, a hospital, a theatre and a cruise ship. Will you be able to scare everyone out and reclaim what has been lost, before the night is over? A side-scrolling action puzzle game starring ghosts!