Mysterious Abandoned Building
Game Information
Developer
Zell23Version
vDemo 1.27 Test
Engine
Others
Release Date
Apr 29, 2024
Last Update
Nov 26, 2025
Censorship
Uncensored
Overview
Mysterious Abandoned Building is a 2D adult horror game for players who want tense exploration mixed with monster encounters. The tone is claustrophobic and unsettling rather than action-heavy.
Gameplay
Players move floor by floor through a decaying building, checking corridors and rooms for clues while trying to avoid or survive run-ins with the creatures living inside. Encounters are handled through short scripted events and evasive actions rather than open combat, with new rooms and enemy behaviors added as the building's layout expands. Progress depends on careful observation and timing rather than fast reflexes.
Features
- Hand-drawn 2D environments with animated enemy encounters
- Monster girl and horror-themed antagonists tied to specific rooms or hazards
- Slow, tension-driven pacing built around exploration rather than direct fighting
Notes
The game leans into non-consent and horror-adjacent themes throughout, including scenes some players may want to check before starting.
Installation
1. Extract and run.
Changelog
v1.27
- [add]
- ・Added two H anime to the test map (Mizuhime, Squeezing Nest)
- [amendment]
- ・Changed the avoidance motion to X→D key (and changed D's debug key to W)
- ・Some modifications to the monster dot map graphics
- ★Character introduction
- [Mizuhime]
- A monster that appears in the waterhole. It clings to your feet to squeeze out the milk that approaches you carelessly.
- [Sperm-milling nest]
- Monsters with powerful powers may be building webs and capturing prey. The way prey is managed differs depending on each monster, but the captive victim is no longer sane and cannot be saved.
- Sometimes you need to hide in the forest in order to evade surveillance.
v1.26
- [add]
- ・Added two H animations to the test map( Red Hood Venomhayes )
- [amendment]
- ・Some modifications to the monster dot map graphics
- ・Make the gallery easy to understand (may be heavy)
- Since adjustments are being made around the HP system, strange behavior may occur
- ★Character introduction
- [ Red food ]
- A monster wearing crimson clothes all over its body. They don't speak the same language and will attack you if they find a human.
- It's like I'm collecting something while wandering around in the ruins...
- [ Venom haze ]
- A monster that spews gas 〇〇 from its body. His face is covered with a gas mask, so it is impossible to see his expression. As you approach defenselessness, you will be in a 〇〇 state in no time...
