City of Sin - The Nocturne Files

City of Sin - The Nocturne Files is a 3D visual novel for players who want a noir mystery with a female protagonist and a mix of dark humor and adult content. The tone is investigative and tense, with a knowing edge.

Story

Kate Adler is an investigator drawn into surveillance at Nocturne, a private club where the city's elite indulge without restraint. A simple job turns into a hunt for missing girls and falsified identities, pulling Kate through penthouses and sewer tunnels alike. Each lead she follows exposes more of the corruption holding the city together, and she starts to suspect that she's being watched as closely as she's watching others.

Gameplay

Play unfolds as narrative-driven investigation: reading through scenes, choosing dialogue and leads, and following branching routes that shift depending on what Kate pursues. Choices affect which threads open up, leading to different confrontations, dreams, and consequences over the course of the case. Achievements track alternate discoveries and outcomes across playthroughs.

Features

• Rendered 3D scenes and animated sequences built around the investigation
• Branching routes shaped by dialogue and investigation choices
• A cast and setting mixing club intrigue, humor, and adult encounters, including same-sex and dominant dynamics