
Overwrite each other. A story-driven exploration adventure shaped by tragedy. ― I woke up in a research facility. And... someone was already inside me. (I initiated the experiment at this research facility.) (My first—and final—experiment for my sake. I staked everything on it.)
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate. Copies below reflect the player base, not paid sales.
Media

About
You wake up in an unfamiliar place—
caught in the experiment of someone cold, clinical… and unhinged.
As you resist the presence lurking inside you and search for a way out,
you begin to uncover the tragedy that unfolded here.
Command System
Use the four commands at the top of the screen to advance.
However, they aren’t always available.
Win the overwrite battle against “someone” and take them back.
Mysteries to Unravel
Who is inside you? Why are you trapped here?
And… what is this bizarre experiment?
Clues lie scattered throughout the facility.
Piece them together—and uncover the truth.
Genre: Exploration Adventure
Explore the environment, examine what you find, and uncover the truth.
Items
Various items are hidden throughout the facility.
They won’t be used automatically.
It’s up to you to decide where to use them.
Setting
Explore a research facility—find a way out.
A mouse is required to interact with commands and objects on the screen.
Movement can also be controlled with the arrow keys—when available.
Estimated playtime is around 5 hours. Multiple endings.
An EXTRA section is available on the title screen, with hints for each ending.
If you get stuck, refer to it for guidance.
Content Warning:
This game contains depictions of death, dark themes, and gore.
Some horror elements are also present.
You can change the language in the Options menu.
Streaming and Let’s Plays are welcome.
You don’t need to include the game title, creator name, or URL.
You’re free to monetize your streams and videos.
(Use of in-game data for purposes other than gameplay or streaming is prohibited.)
Genres
Stats
Languages: Japanese, English
Engagement
Reviews
Themes across 40 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
絵が綺麗で物語では文字の色分けや日本語ならではの言い回しなどが良かった。 また、やるなら全エンディング制覇をして欲しい。Extraまでやるとさらにいい。 コマンドが4つだけでも十分難しかった。 やるなら、覚悟を決めた方がいい。
全エンドクリアしました! 最初からしっかり読んで進めれば、謎解きが苦手な人でも十分クリアできると思います。 とても面白かったです!
とても良き物語でした…!
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 41 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
神げー。神BGM
タグにホラーが付いてるけどホラー耐性が皆無でも遊べると思う
ウワガキアイという言葉の意味が変わる。とても素敵な物語でした。
gg
除了没有中文以外,这是一部神作
記憶を消してもう一回やりたい
泣けるいい話でした 前日譚も含めてせつない。。
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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