
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.)
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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
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!
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。
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。
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 40 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
更新了新的内容,非常建议游玩 一开始只看过实况,后来看到要更新新的内容之后就很期待新内容了,更新后把游戏完整地体验了一遍,第零话填上了许多之前的坑,第零话的启动方式是[spoiler] 在完成了TRUEEND之后进入EXTRA界面,在左下角的回收站(垃圾桶)里面 [/spoiler]
4時間少しでクリア(全END回収) 終わった後の何とも言えない感覚がすごい。 シナリオはもちろんのこと、コマンドシステムも斬新で面白い。 謎解きの難易度もしっかり高く、楽しみながら悩みながら進めていくことができる。 無料とは到底思えないクオリティ。 私の心をしっかりと刺してきたウワガキアイと制作者の皆様に感謝。
似乎是讲了一个缝合的人工生命体(上条爱)拯救研究员(的一部分)的故事? 因为只有日语,剧情上我看的稀里糊涂并不是很懂,尤其是后面的对话部分完全是一个个试过去的 不过画风很好,作为免费游戏这个质量相当可以了
神げー。神BGM
めっっっっっっっっっっっっっっっっっっっっっちゃ面白いです ストーリーはある種王道……?条件分岐もフリーゲームらしくちょいムズ(ただExtraにヒントが有るので特に困らず) ただ、それを差し引いて[b]ゲームシステムと演出の融合[/b]がすごい。天才だと思いました。
泣けるいい話でした 前日譚も含めてせつない。。
とても良き物語でした…!
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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