The Demon Lurking in Osaka Castle – Episode 1 Demo

Developer: Osaka Games
Released: Oct 2, 2026
Tags: AdventureIndie

View on Steam

Where to buy

Steam

Buy on Steam

Compare elsewhere:GOG ↗Epic ↗

What owning this involves

No cloud saves · The store does not back this game's saves up — they live on the machine you play on.From the store listing

Only what the store discloses. Nothing listed here means the store disclosed nothing — not that there is nothing to disclose.

AI Generated Content Disclosure

Declared by the publisher

Generative AI was used during development for certain supernatural visual elements and pre-rendered video sequences, and to assist with some visual design, UI, localization, code modifications, and limited narrative design. All live-action footage of Osaka Castle Park was filmed on location. No AI-generated content is created during gameplay.

Required on Steam since 2024. Covers what ships, not tools used in development. Check it on Steam.

Features

Single-player
Game demo
Mouse Only Option
#category_playable_at_your_own_pace
Playable without Timed Input

From the game's Steam store page.

Languages

English

Steam lists 1 language.

Age rating & content

DEJUS 14 · Violência Medo Drogas lícitasThe rating board's own rating, as Steam relays it
General Mature ContentSteam's content descriptors, as the developer answered them
Contains intense supernatural horror, jump scares, and fantasy violence involving supernatural entities. Includes frightening scenes of characters being attacked by supernatural entities, occasional mild language, and brief references to and depictions of cigarette smoking. No gore or realistic blood is shown.The developer's note on the content, from Steam