Single-player games like City of Sin - The Nocturne Files [Ep1]
Below are 8 single-player Steam games similar to City of Sin - The Nocturne Files [Ep1], 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 City of Sin - The Nocturne Files [Ep1] page.
Ranked picks
- 1

Temptation's Price - Episode 1
Single-player alternative to City of Sin - The Nocturne Files [Ep1] — playable solo, no multiplayer required. Shares Indie and Casual with City of Sin - The Nocturne Files [Ep1].
The game's plot revolves around the life of a staff member at a prestigious university of architecture. At the heart of the story is a complex love triangle where personal feelings, professional ethics, and a struggle for influence are closely intertwined.
- 2

Dirty Texts - Are You Sure?
Single-player alternative to City of Sin - The Nocturne Files [Ep1] — playable solo, no multiplayer required. Shares Indie and Casual with City of Sin - The Nocturne Files [Ep1].
In "Are You Sure?" you play the role of a husband who, wanting to spice up their sex, convinced his wife to try a one week open marriage adventure. During this week you and your wife will test different things and see if this will improve your relationship or destroy it.
- 3

Jessica's Choices - Origins
Single-player alternative to City of Sin - The Nocturne Files [Ep1] — playable solo, no multiplayer required. Shares Indie and Casual with City of Sin - The Nocturne Files [Ep1].
In this multiple choice visual novel and the first official game of the Jessica's Choices mini universe, you will see choices made in this game impact the future games - Forced, Prison before culminating in RED.
- 4

Hidden Girls
Single-player alternative to City of Sin - The Nocturne Files [Ep1] — playable solo, no multiplayer required. Shares Indie and Casual with City of Sin - The Nocturne Files [Ep1].
Hidden Girls is a relaxing game that combines hidden object gameplay, visual novel storytelling, and anime-style character interaction.
- 5

Sutekina kanojo no tsukurikata
Single-player alternative to City of Sin - The Nocturne Files [Ep1] — playable solo, no multiplayer required. Shares Indie and Casual with City of Sin - The Nocturne Files [Ep1].
This is a story between a yandere social anxious girl and a wellborn young lady, produced by the Japanese Bishōjo game brand Sushi soft. Interaction occurs at several points where choices are given to the player, and these choices eventually lead to 8 various endings.
- 6

Exploring the Big Apple
Single-player alternative to City of Sin - The Nocturne Files [Ep1] — playable solo, no multiplayer required. Shares Indie and Casual with City of Sin - The Nocturne Files [Ep1].
Follow Emma and Patrick – a young married couple – on their adventure as they move to New York to start a new chapter in their lives. A temporary stay at an old friend’s soon reveals a lot about his past and their future…
- 7

Don't Make Love
Single-player alternative to City of Sin - The Nocturne Files [Ep1] — playable solo, no multiplayer required. Shares Indie and Casual with City of Sin - The Nocturne Files [Ep1].
Assume the role of a praying mantis in a relationship dilemma. Torn between their mutual love and the instinct to have sex – which could lead to the male mantis’s death – the couple is on the verge of making a decision. Type anything you want in response to your partner during this life-changing conversation.
- 8

Criminal Attraction
Single-player alternative to City of Sin - The Nocturne Files [Ep1] — playable solo, no multiplayer required. Shares Indie and Casual with City of Sin - The Nocturne Files [Ep1].
You are a cunning FBI agent. Four beautiful girls are robbing banks. Infiltrate their gang and let yourself be carried away by your feelings towards them. Love? Hate? Passion? Lust? Find the evidence to frame them and send them to jail, or, fall in love with them!