Another World Series -Slit Mouth Woman VS AOONI-
Legendary modern monsters vs. legendary horror games! This is a 3D horror action adventure game where you must escape from an abandoned hospital without being found by the Slit Mouth Woman who lives in another world and AOONI who lives in the real world.
Does this feel indie?
Vote based on whether this game feels indie to you. You can change your vote at any time. Results earn an IGF score after 10 accepted votes.| ContextThe evidence factors used to assess whether this game belongs on IndieGame.Fan. | Status | Notes Latest Contributor: IGF TeamEdit notes |
|---|---|---|
Updated: Jul 14, 2026Developer scaleThe operating scale of the game's developer. | ||
Updated: Jul 14, 2026Publisher scaleThe operating scale of the game's publisher. | A separate publisher is listed without a proven bounded regional or service-only role. | |
Updated: Jul 14, 2026Release statusWhether and how the game has been released. | The title released with a separate publisher relationship. |
Media
7 itemsAbout the Game
The first in the “Another World Series”, in which the protagonist solves a mystery while moving between different worlds.
A legendary modern ghost story vs. a legendary horror game!
Solve the mystery of the abandoned hospital without bein
Akashi Asanagi, a university student, wakes up on the 10th floor of an abandoned hospital.
While exploring the hospital, he encounters a blue monster called “Aooni”, and when he touches the mask that Aooni dropped, the hospital transforms into an alley, where he encounters a mysterious woman wielding a kitchen knife called “Slit Mouth Woman”.
Akashi is attacked by the two beings, but for some reason a battle breaks out between the Slit Mouth Woman and Aooni...?
School, cemetery, house...
Explore the various different worlds on each floor and use items and gimmicks to solve the mystery of the abandoned hospital.
Multi-endings are unlocked depending on the results of your play, and each floor also has fully voiced event scenes.
Why are the Slit Mouth Moman and Aooni fighting? Who will win? Who is Akashi himself?
Conquer all 10 stages and escape from the abandoned hospital.
■Main Characters
・Akashi Asanagi
A cheerful and slightly airheaded first year university student.
He finds himself in an abandoned hospital.
He has good reflexes.
・Ray Yuyami
Despite being in the fifth grade, she has a level of thinking and knowledge that puts adults to shame.
She received a letter from her older sister, who ran away from home three years ago, and came to the abandoned hospital.
She is quiet, but loves the occult.
・Mumu Nissyoku
A girl who is always smiling and carefree.
■Controls
A Button (Left Click, Enter): Examine, decision
B Button (Right Click, Back Space): Cancel
Y Button (F): Use selected item
X Button (Ctrl): Crouch
L Bumper, R Bumper (Q, E): Select item
L Trigger, R Trigger (Z, C): Look back
Start/Menu (TAB): Open pause screen
