Another World Series -Slit Mouth Woman VS AOONI-
by Regista
Legendary modern-day ghost “Slit Mouth Woman” vs. legendary horror game “AOONI”!
Age rating content: Blood, Violence.
Languages: Japanese, English
Screenshots
About this game
The first in the “Another World Series”, in which the protagonist solves a mystery while moving between different worlds.
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
An enigmatic girl who is always smiling and aloof.
■Controls
A button: Examine
X button: Use selected item
Y button: Crouch
L button, R button: Select item
ZL button, ZR buttons: Look back
+ button: Open pause screen
Prices by country
Cheapest today: 🇵🇱 Poland, COL$10,017 (−75%, sale ends Nov 13, 2026). Lowest price since October 2026, when we started tracking it.
| Country | Price |
|---|---|
| Poland On sale until Nov 13, 2026 | -75% |
| Japan On sale until Nov 11, 2026 | -75% |
| Australia On sale until Nov 13, 2026 | -75% |
| South Africa On sale until Nov 13, 2026 | -75% |
| Sweden On sale until Nov 13, 2026 | -75% |
| Denmark On sale until Nov 13, 2026 | -75% |
| Austria On sale until Nov 13, 2026 | -75% |
| Belgium On sale until Nov 13, 2026 | -75% |
| Bulgaria On sale until Nov 13, 2026 | -75% |
| Cyprus On sale until Nov 13, 2026 | -75% |
| Germany On sale until Nov 13, 2026 | -75% |
| Estonia On sale until Nov 13, 2026 | -75% |
| Spain On sale until Nov 13, 2026 | -75% |
| Finland On sale until Nov 13, 2026 | -75% |
| France On sale until Nov 13, 2026 | -75% |
| Greece On sale until Nov 13, 2026 | -75% |
| Croatia On sale until Nov 13, 2026 | -75% |
| Hungary On sale until Nov 13, 2026 | -75% |
| Ireland On sale until Nov 13, 2026 | -75% |
| Italy On sale until Nov 13, 2026 | -75% |
| Lithuania On sale until Nov 13, 2026 | -75% |
| Luxembourg On sale until Nov 13, 2026 | -75% |
| Latvia On sale until Nov 13, 2026 | -75% |
| Malta On sale until Nov 13, 2026 | -75% |
| Netherlands On sale until Nov 13, 2026 | -75% |
| Portugal On sale until Nov 13, 2026 | -75% |
| Romania On sale until Nov 13, 2026 | -75% |
| Slovenia On sale until Nov 13, 2026 | -75% |
| Slovakia On sale until Nov 13, 2026 | -75% |
| United States On sale until Nov 7, 2026 | -75% |
| Czechia On sale until Nov 13, 2026 | -75% |
| Norway On sale until Nov 13, 2026 | -75% |
| Canada On sale until Nov 7, 2026 | -75% |
| Mexico On sale until Nov 7, 2026 | -75% |
| United Kingdom On sale until Nov 13, 2026 | -75% |
| Switzerland On sale until Nov 13, 2026 | -75% |
Click a country to see how to buy there; new to buying abroad? Here is how it works. Prices are as each eShop lists them: VAT included where the eShop includes it, US prices before sales tax, and for Canada we add the 5% federal tax Nintendo leaves out · fetched up to 2026-11-06 02:39 UTC · not sold in 5 countries.
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