Red Siren Protocol is an 18+ spy sandbox VN where you juggle heist-like missions, city exploration, and relationship routes to expose a bio-tech gas conspiracy. Use stats, choices, hacking, and consensual seduction to survive deep cover.

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This game is not yet available on Steam

Planned Release Date: November 2026

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Mature Content Description

The developers describe the content like this:

This game contains explicit sexual content between consenting adults (all characters are 18+), full frontal nudity, explicit sexual dialogue, and strong language. It includes depictions of oral sex (blowjob/cunnilingus), handjobs, titjobs, fingering, visible ejaculation, and penetrative vaginal sex in multiple positions. Some scenes involve sexual themes tied to espionage: seduction used as a tool, transactional sex to gain access/rewards or avoid consequences, and “blackmail/coercion pressure” themes where Scarlet is threatened or pushed, but any sexual act shown is framed as consensual in-scene. The story also includes a fictional chemical gas that lowers inhibition and makes characters more suggestible; the game depicts sex with characters affected by this gas, but it is presented as adult consensual sex and not as sexual assault. The game does not depict minors, incest, bestiality, self-harm, or suicide, and does not include graphic gore; violence is not a focus.

About This Game

Red Siren Protocol is a near-future espionage visual novel with a sandbox loop: plan your next move from a small safe apartment, head out into the city to build leverage and resources, then dive into story missions that play like heists—prep work first, then the real operation.

A hostile nation is developing a bio-tech gas meant to turn soldiers into stronger, less resistant “assault units.” Your mission is to infiltrate the tech conglomerate producing it, map the military power web behind it, steal proof, and stop what’s coming—before it spills past the border.

You are Scarlet Voss (codename: Red Siren), an elite agent trained to become whatever the situation demands: corporate consultant, lab assistant, party girl, quiet fixer. Your weapons aren’t just guns and gadgets—your real edge is control: reading people, pushing pressure points, and using seduction, roleplay, and psychological manipulation to extract access and information.

What you’ll do:

  • Run a mission-driven campaign inspired by heist structure: objectives unlock through preparation tasks, key targets, and the final operation that ties everything together.

  • Return to base between missions to rest, change outfits, manage progress, and decide where to go next.

  • Use your stats to solve problems your way:

    • Lewdness unlocks bolder approaches, riskier favors, spicier dialogue, and provocative outfit access.

    • Intelligence unlocks hacking, lockpicking alternatives, chemistry insights, and smarter routes.

    • Strength unlocks physical solutions, forced entry options, and intimidation paths.

Features:

  • Sandbox & Narrative Hybrid: story missions + free exploration loop.

  • Spy fantasy tone: infiltration, blackmail, secrets, and controlled risk.

  • Explicit 18+ content: full nudity, explicit sexual dialogue, and adult scenes that are integrated into the gameplay.

All characters are 18+ and all intimate scenes are depicted as consensual, with consent framed directly in-scene even when the tone leans into manipulation, power games, or the gas’s plot effects.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Initial sketches are hand-drawn, capturing the our characters and settings. We then use AI tools to refine these illustrations, enriching textures and colors for a better experience.

System Requirements

Windows
macOS
SteamOS + Linux
    Minimum:
    • OS *: Windows Vista, 7, 8, 10, 11
    • Processor: 2.0 GHz Core 2 Duo
    • Memory: 2000 MB RAM
    • Graphics: Nvidia GT 750 or better, AMD equivalent
    • Storage: 2000 MB available space
    • Additional Notes: Full HD monitor is recommended
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.
    Minimum:
    • OS: 10.6 or higher
    • Processor: Dual Core or better
    • Memory: 2000 MB RAM
    • Graphics: Nvidia GT 750 or better, AMD equivalent
    • Storage: 2000 MB available space
    • Additional Notes: Full HD monitor is recommended
* Starting February 15, 2024, the Steam Client will no longer support 32-bit games or macOS 10.14 or lower.
    Minimum:
    • OS: SteamOS 3.5 / Ubuntu 20.04
    • Processor: Dual Core or better
    • Memory: 2000 MB RAM
    • Graphics: Nvidia GT 750 or better, AMD equivalent
    • Storage: 2000 MB available space
    • Additional Notes: Full HD monitor is recommended
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