
It was supposed to be just a harmless chat to kill time with a stranger named Mina. But from the other side of the browser, the boundary between your reality and the internet is slowly being eroded. This is a desktop-invasion chat horror.
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Media

About
Sato Killing Time Chat.exe is a short-form ARG (Alternate Reality Game) mystery where players communicate with a mysterious girl named "Mina" through a chat interface. This isn't just a game inside a window—it’s an experience that bleeds into your real world.
Players launch a specific chat app on their PC and exchange messages with a girl named "Mina." An outcast at school and estranged from her family, she reaches out to you with a simple request: "Kill some time with me."
■ Story Progression via Chat UI
The game features a realistic messenger app interface. Through your conversations with Mina, you will gradually uncover the truth. The responses you receive adapt based on your own replies.

If I tell Mina something she dislikes, she might start keeping her distance...?
■ Web Browser Integrated Gameplay
Investigate a web of multiple fictional pages—furniture stores, news sites, social media, and corporate homepages. Everything is a clue leading to the "answer," from hidden codes and names to a single sentence in a comment section.
■ "Selfies" as Rewards
When you clear specific puzzles or phases, Mina—who is fully convinced of her own cuteness—will send you selfies as a "reward." Is this genuine affection, or is it manipulation?
◤◢◤hiding in plain sight◢◤◢
rm -rf /mnt/mem/mina --force
■ Streaming & Content Creation Guidelines
We wholeheartedly welcome videos, streams, and articles that help build excitement for this title. Monetization and spoilers are allowed, so please enjoy playing to your heart's content.
<Scope of Use> Customers who have downloaded the game are permitted to use game assets for video production, regardless of whether they are individuals or corporations, and for commercial or non-commercial purposes, provided they follow these guidelines.
<Prohibited Segments> There are no prohibited segments for streaming Sato Killing Time Chat.exe. However, to avoid ruining the experience for other customers, please explicitly mark your content with "Contains Spoilers" or similar warnings.
<Conditions of Use>
Please include the following link and copyright notice in the video description: [Link to Steam Store Page]
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■ Feedback & Contact
We’d love to hear your thoughts on social media! Hashtag: #SatoKillingTimeChat
Fan art and derivative works are also highly welcome. We would be thrilled if you shared them with us!
Genres
Stats
Languages: Japanese, English
Engagement
Reviews
Themes across 47 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
그냥 대충 제목만 보고 심심풀이 게임인가 싶어서 다운로드 해봤는데 제가 정말 좋아하는 공포 장르에 매력넘치는 [spoiler] 얀데레+비인간(AI) 캐릭터 [/spoiler] 여서 굉장히 즐겁게 플레이했습니다. 어서 미나와 만나고 싶네요.
👍️
this game has potential but the translate is bad,even a single CAPITAL alphabet is taken as mistake. you can't rely on website translation either.i suggest more proper english translation for the site to make it easier .its unplayable in english without any guides i hope they fix it
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 47 reviews with recorded playtime.
久しぶりにおもしろいゲームが遊べた 忙しくても比較的短時間で遊べるのがよかった 謎解きは少し難しいかったけど ARGゲームをやったことない身としては新鮮でよかった ARGゲームを初めてやる人におすすめかもしれない でもエンディングまだ分岐が未だにわからない(TT)
あんまりストーリーに乗れなかったのと、単純に謎解きが難しすぎて冷めてしまったのでそこまで楽しめませんでしたが、演出やUI、ストーリー上の挙動はよくできているなと感じました。 好きな人は好きなんじゃないでしょうか?本作は私向けではなかったということで。 評価は👍です。 様々な作品からの踏襲や、実際に検索をさせてくるスタイルは好きでした。
美少女不赖= = 模拟恐怖挺像那么回事,AI素材放在这里倒还蛮能增添恐怖氛围的。解谜部分就比较一般了,刷好感有点尴尬且意味不明(可能是我自己的问题)[spoiler]最后真相揭露也是相当old school了(非褒义)没想到2026年还能见到这么土的日式猎奇甚至因为太老套根本都没感觉恐怖了只想笑[/spoiler]流程不长,卖角色吧美少女戏份也不多,搞黑深残也没看出来想表达什么当然也可能本身就是饺子醋,总体来说比较失望
おもしろかったです。無料にしてはやりごたえがあってとても楽しかったです。共存エンドもあるらしいので見に行けたらいいなって感じで分岐を摸索しています!あとミナのビジュが刺さりすぎて死にかけたわまじ。
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.