Single-player games like The Sinner of the Closed Set
Below are 8 single-player Steam games similar to The Sinner of the Closed Set, 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 Sinner of the Closed Set page.
Ranked picks
- 1
Subsurface Circular
Single-player alternative to The Sinner of the Closed Set — playable solo, no multiplayer required. Shares Indie and Casual with The Sinner of the Closed Set.
When the truth is buried, go underground. Step into this new take on text-based adventure from the award-winning team behind Thomas Was Alone and Volume. A short story that hands you the fate of the world above, as a detective looking for answers on the Subsurface Circular.
- 2
A Case of Distrust
Single-player alternative to The Sinner of the Closed Set — playable solo, no multiplayer required. Shares Indie with The Sinner of the Closed Set.
A Case of Distrust is a narrative mystery from 1924 San Francisco. Play as private investigator Phyllis Cadence Malone in this historical 2D adventure game.
- 3
![[Redacted] The Safehouse — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/403620/de4167ba19150f58bc1807c17fde298b3d2eebc1/header.jpg?t=1785288465)
[Redacted] The Safehouse
Single-player alternative to The Sinner of the Closed Set — playable solo, no multiplayer required. Shares Indie with The Sinner of the Closed Set.
You're a detective. Investigate the haunting events surrounding the murder of Ann Peterson and her boyfriend. Explore an old safehouse for clues, deduce keywords and reveal redacted words as you search Ann's digital journal, and piece together your case report as this unfortunate story unfolds.
- 4
Kathy Rain 2: Soothsayer
Single-player alternative to The Sinner of the Closed Set — playable solo, no multiplayer required. Shares Indie with The Sinner of the Closed Set.
In this point-and-click urban thriller, down-and-out private eye Kathy Rain will embark on her most dangerous case yet — the pursuit of the notorious serial killer known as the Soothsayer. Find clues, gather evidence, connect the dots, and confront the murderer before the hunter becomes the hunted…
- 5
Confidential Killings - A Detective Game
Single-player alternative to The Sinner of the Closed Set — playable solo, no multiplayer required. Shares Indie with The Sinner of the Closed Set.
A series of murders is shocking Hollywood! Use your detective skills: search the crime scene, find clues, solve the mystery. Who is pulling the strings behind these Confidential Killings?
- 6
The Darkside Detective: A Fumble in the Dark
Single-player alternative to The Sinner of the Closed Set — playable solo, no multiplayer required. Shares Indie and Casual with The Sinner of the Closed Set.
Delouse your room with sage and pack up your travel-sized ouija board, it’s time to re-enter Twin Lakes - America’s 34th most haunted city. Join Detective McQueen as he puzzles his way through 9 chilling cases, risking life and pixelated limb to solve the macabre mysteries that plague the poor town.
- 7
Duck Detective: The Secret Salami
Single-player alternative to The Sinner of the Closed Set — playable solo, no multiplayer required. Shares Indie and Casual with The Sinner of the Closed Set.
Solving crime is no walk in the pond. You are a down-on-his-luck detective who also happens to be a duck. Use your powers of de-duck-tion to inspect evidence, fill in the blanks, and bust the case wide open! This is a short but twisty detective case.
- 8
Lucifer Within Us
Single-player alternative to The Sinner of the Closed Set — playable solo, no multiplayer required. Shares Indie with The Sinner of the Closed Set.
Solve 3 increasingly intricate murders by examining the evidence -- find the motive, the means, and the opportunity. Use testimonies of the suspects as evidence by examining every detail for contradictions... and signs of sin. Purify the possessed. Purge the daemons.