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Strain Y by Space Sultan

2D games

About the game

Some or all visuals in this game were created with AI
Jade only wanted to survive a campus mixer.
Instead, she leaves with something far worse.
After a drunken hookup, she wakes up changed. Something has infected her, something that only seems to affect women, rewriting their bodies in ways that are impossible to ignore. By the time she meets up with Riley, the protagonist, Jade has no idea how the infection actually spreads.
Riley finds out the hard way.
Strain Y follows a strange new virus spreading across campus through semen. If someone carrying the virus ejaculates inside you, no matter where, you wake up carrying Strain Y yourself. What starts with Jade quickly becomes Riley's problem too, and from there, the infection only has more opportunities to spread.
Features futanari transformation, gender-bending, oral sex, sex scenes, and full SFX design.​

Last update: 2026-09-18
Released: 2026-08-16
Creator (developer): Space Sultan
Censored: Partial
Version: 1.0
OS: Windows, Linux, Mac
Language: English
Store:
Genre:
2DCG, AI CG, Futa/Trans, Oral Sex, Transformation, School Setting, Futa/trans protagonist, Censored, Vaginal sex,

How to install:
1. Play in browser, no installation needed, or
2. Download the appropriate version for your OS.
3. Extract and run.

Changelog:
v1.0
Initial Release

Developer Notes:
Strain Y is a short-form episodic adult visual novel centered around a strange virus spreading across campus.
Each chapter follows the infection as it reaches new characters and pushes the transformations further.
Features:
Futanari transformationTransformation-focused CG progressionOral and sexual contentFull SFX designBrowser, Windows, Linux, and Mac buildsEpisodic story formatChapter I introduces Jade, Riley, and the rules behind Strain Y. Future chapters continue the story as the virus spreads.

Screenshots

Downloads