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Don’t open the Door [v2.5] [Infinite Expansion]

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1.3 Rating Updated Oct 15, 2026

Don’t Open the DoorA Survival Horror Game of Temptation and TransformationThe world has fallen to the RAG-Virus—a pandemic causing rapid

Don’t Open the Door
A Survival Horror Game of Temptation and Transformation
The world has fallen to the RAG-Virus—a pandemic causing rapid weight gain and mental decline. You’re Sarah, alone in your apartment as Visitors knock each night. Some are survivors. Others are something far worse. Every choice determines if you survive or become their next mindless vessel.

Thread Updated: 2026-10-15

Release Date: 2026-04-09

Developer: Infinite Expansion itch.io – Patreon

Censored: No

Version: 2.5

OS: Windows, Android

Language: English

Store: itch.io

Genre:

Horror, NSFW, Visual Novel, bbw, big-tits, breast-expansion, expansion, ssbbw, weight-gain, wg

Installation:

1. Extract and run.

Changelog:

v2.5

Whats new?

1 more night
3 more encounters
1 special encounter
new testing
2 more major endings
1 secret ending
rework of the encounters so they start thinn in the first night and as the Virus progress the encounters get heavier
also some mainor text reworks , but more if it in the next Update

Demo

initial zone release

Developer Notes:

Features:

Visitor Testing System: Check hands and teeth—some aren’t human

Weight Gain Progression: Watch Sarah physically transform as the virus takes hold

8 Unique Visitors: Each with their own dark desires and secrets

Multiple Endings: Survive, escape, or embrace transformation

Psychological Horror: The seductive pull of giving in

Content Includes:

Female MC transformation

BBW/SSBBW weight gain

Breast and ass expansion

Horror and psychological tension

Adult themes (18+)

From the Developer

“Don’t Open the Door explores the intersection of fear and desire. What happens when the thing that terrifies you also tempts you? When survival means resisting pleasures that promise to erase all your pain? This game is about that moment of choice—when the knocking starts, and you have to decide who to let in.”

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Win: BUZZHEAVIER – DATANODES – PIXELDRAIN – MEGA – MIXDROP