Others Mysterious Abandoned Building [Demo v1.27] [Zell23]

[7767]

Overview:
The game takes place inside a decaying, multi-floor abandoned building filled with dark corridors, strange rooms, and hostile creatures. The focus is on slow exploration, environmental tension, and navigating the building’s floors while encountering enemies and scripted events. Each update typically introduces new rooms, enemy animations, or mechanics, and reflects the author's iterative development style. Unlike his more combat-focused projects, Nazo no Haibiru leans into a claustrophobic horror tone, highlighting tight spaces, surprise encounters, and survival-style progression. Players must explore carefully, pay attention to environmental clues, and avoid or endure encounters with the building’s residents.​

Thread Updated: 2025-11-26
Release Date: 2024-04-29
Original Title: 謎の廃ビル / しらたねの塔 / しらたねの塔 y シロノヤカタ
Aliases: shirotane tower
Developer: Zell23

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Censored: No
Version: Demo v1.27
OS: Windows
Language: English
Store:

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Other Games: Link
Genre:

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Installation:

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Changelog:

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Developer Notes:

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​

 

[Crow Armbrust]

THX

 

[timmy95]

Foreshadowing name.

 

[glaskanosvki]

Broo i thought it got an update i was so hyped for a sec.

 

[Oddly Blank]

it's not abandoned though.

 

[rKnight]

The game takes place inside a decaying, multi-floor abandoned building filled with dark corridors, strange rooms, and hostile creatures.

THX for the share...

 

[nonnon686997]

why abandoned?

 

[Eshaloth]

Developer name is DeveloperName or is that a mistake by OP? Nice game!

 

[darthvaapad]

why abandoned?

probably a miss label due to name as the abandoned tag was removed

 

[Oddly Blank]

Zell23 is only one of the devs, Sakubasu's Diary is the dev group name.

 

[Xelthax]

Any tips on how to play this?

 

[Uaredead]

Any tips on how to play this?

the only thing i can say is «Fuck around and find out»

 

[sakarsakir78]

Nive pixel art

 

[nonnon686997]

Is this Shirono Yakata?

 

[Icarus Media]

Tatsuo went into a creepy building,
Tatsuo encounters monstergirls,
assuming Tatsuo had 14 apples and 23 grapes,
how empty will his balls be by morning?

 

[Zeldapro]

Tatsuo went into a creepy building,
Tatsuo encounters monstergirls,
assuming Tatsuo had 14 apples and 23 grapes,
how empty will his balls be by morning?

Doesn't apply because he won't have balls anymore at that point.

 

[AA_gunner]

Dam, this really reminded me of how entertaining FOBS was. Anyone know if there is still a way to capture the monster girls like before?

 

[JasonJX]

is there any gameplay to this or is it just a gallery demo?

 

[Oddly Blank]

Dam, this really reminded me of how entertaining FOBS was. Anyone know if there is still a way to capture the monster girls like before?

at the very least, not in this demo, the version the devs show off on their ci-en page has way more content.

 

[Sasakimiyat]

i love pixel art