![City of Sin - The Nocturne Files [Ep1]](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/4153410/3308e5ab0e151d0670f1d69806cce38daa0b97f3/header.jpg?t=1768052552)
City of Sin - The Nocturne Files [Ep1]
by DoAdventures
Jan 3, 2026
In a city where power is measured in secrets, Kate Adler is no stranger to deception. A sharp-witted investigator with a talent for navigating lies, she's handed a rare lead, an invitation to Nocturne, the clandestine club where the elite shed their masks and morality.
CasualIndie
Est. lifetime net revenue (USD)$6.6K
Est. lifetime units sold1.3K
Current CCU—
Review Score78.95% Mostly Positive
Steam estimates, not reported sales. Net is after modeled deductions; gross is before them. Est. lifetime gross (USD): $11.4K. Estimate date: 2026-04-04. Confidence: 58% · Net revenue range: $4.2K – $9K. Confidence is a model quality score, not a probability of success.
Game Details
Achievements
6 Achievements
Languages
English, French, Italian, German, Spanish - Spain, Russian, Simplified Chinese, Turkish
Content Descriptors
All characters depicted in this game are 18 years of age or older.
City of Sin is an adult only visual novel intended for mature audiences.
The game contains explicit sexual content, including:
Explicit nudity
Graphic sexual acts between consenting adults
Strong sexual language and dialogue
The game also contains sensitive and potentially disturbing themes, including:
Non-consensual sexual content involving coercion and lack of consent
Sexual situations involving power imbalance, dominance, and control
BDSM-related themes, including restraint and the use of sexual props
Psychological manipulation and emotional abuse
Erotic scenarios that may depict characters being pressured or manipulated into sexual situations
Some story paths may lead to scenes depicting sexual violence or sexual coercion.
Additional mature content includes:
A stylised physical fight scene with minor injury (bloody nose), without graphic gore
Strong language and mature themes throughout
This game is not suitable for players who may be sensitive to themes of sexual coercion, non-consent, dominance/submission dynamics, or psychological abuse.
Viewer discretion is strongly advised.
System Requirements
Minimum
Minimum:
- OS *: Microsoft® Windows® 7/8/8.1/10 (64bit)
- Processor: Intel Core2 Duo or better
- Memory: 500 MB RAM
- Graphics: DirectX 9/OpenGL 4.1 capable GPU
- Storage: 3 GB available space
Additional Information
Support