How to Download City of Sin - The Nocturne Files [Ep1]

1. Click on the City of Sin - The Nocturne Files [Ep1] download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

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

No maximum requirements!!

Linux Requirements

Minimum:

• OS: OpenGL 2, DirectX 9, OpenGL ES 2, or WebGL
  
• Processor: Intel Core2 Duo or better
  
• Memory: 500 MB RAM
  
• Storage: 3 GB available space

No maximum requirements!!

Mac Requirements

Minimum:

• OS: Mac OSX 10.15 or better
  
• Processor: Intel Core2 Duo or better
  
• Memory: 500 MB RAM
  
• Storage: 3 GB available space

No maximum requirements!!

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.

In a city where power is measured in secrets, Kate Adler is no stranger to deception.

Your Story, Your Choices, Your Gameplay

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.

But Nocturne is just the beginning.

What starts as a simple surveillance job unravels into a deeper conspiracy, missing girls, falsified identities, and a city stitched together by corruption. From neon-lit penthouses to sewer tunnels, Kate must follow the clues through every layer of society’s rot.

Every lead is a choice. Every truth, a risk.

And the deeper she digs, the more Kate realises: she might not be the hunter after all.

City of Sin – The Nocturne Files is a choice-driven visual novel that blends investigative gameplay with narrative branching.

You’ll uncover clues, question motives, and decide who Kate can trust as you navigate a world where every decision has weight.

Gameplay Overview

🔹 Choice-Driven Storytelling: AVN branching dialogue options and player decisions that shape Kate’s path and relationships.

🔹 Multiple Endings: Outcomes vary based on your choices, from investigative success to moral downfall.

🔹 3D Visuals: High-quality DAZ renders and immersive lighting that bring each environment and character to life.

🔹 Interactive Exploration: Investigate scenes, follow leads, and uncover hidden truths through narrative choices.

🔹 Mature, Emotional Themes: Power, manipulation, desire, and consequence are explored through adult storytelling.

🔹 Episodic Expansion: Regular free updates continue Kate’s investigation and expand existing routes no paid DLC or hidden content.

Summary

• Genre: Narrative / Visual Novel / Mystery

• Themes: Investigation, Corruption, Adult Choices

• Mode: Single-player

• Content Updates: Free episodic expansions

Ongoing Support & Content

This release includes all currently playable chapters and major branching routes.

Future updates will add new episodes, scenes, and endings all included with your purchase at no additional cost.

No microtransactions, no paywalls, just an expanding world shaped by your choices.

“This game looks very promissing and I personally cannot wait for the next episode! (y) The FMC is really cute and also hot (reminds me Ellie from AWAM). :love: The plot is really good with some mystery :cool: What else the fans could possibly want?!”
5 out of 5 – F95