NONUPLE NINE: Asymptote
In That Building, Only the 32nd Floor Loops Forever
"NONUPLE NINE: Asymptote" is a side-scrolling science fiction narrative adventure game.
Take the role of a girl who has been made a "subject" and unravel the mystery building whose floors keep repeating.
Relying on our vast scientific knowledge, shall we travel on a death-defying
Release Date: | 2026 |
Platform: | Steam® |
Player(s): | 1 Player |
Price: | TBD |
Genre: | Adventure |
Supported Language(s):: | Japanese(TBD) |
produced by

About This Game
In That Building, Only the 32nd Floor Loops Forever

A girl wakes up in a research facility where she’s always on the same 32nd floor, no matter where she goes…
Control “Subject Nonuple Nine” and explore the building from a side-scrolling perspective.
Click on places that catch your eye, gather clues and solve the mystery of this world.

Anime, Live Action, Manga…All Sorts of Visual Design
Pick up manga to read it. Video logs of remote meetings are displayed on monitors, and business programs are playing on television. Styles of animation depend on the event, with over 1,700 animations in total. The sheer scope is overwhelming, with all of it leading to a unique ending.

Development Time: 12 Years. Estimated Play time: 30 Hours. A true labor of love.
The developer had experience as a scenario writer for several titles in the “Ace Attorney” series before going freelance, spending a long period developing this game experience with a playtime of 30 hours despite its small scale. With state-of-the-art scientific knowledge and supervision from experts in their field, this game will change your entire outlook on the world. Lastly, this game’s entire original soundtrack was composed by Tenmon, famous for the score of “5 Centimeters per Second.”

Q&A
Q: Is this a horror game?
While dead bodies and blood are sometimes depicted, the goal of this game is not to instill fear, but create suspense and curiosity as you come closer to discovering the shocking truth. Also, there are no sudden loud sounds, etc. a.k.a. “jump scares” in this game.
Q: Is this an escape game?
The objective of this game may be to escape, but it isn’t an “escape game.” There aren’t very many action or puzzle elements, making the main goal of the game to follow the story while exploring. Quick reflexes or complex controls aren’t required.
Q: Are the sample animations, etc. cutscenes?
There is only a very small number of scenes in this game where you must only watch a movie without any player input. Many animations will play out with the timing the player chooses as they read and continue the story themselves.