
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]
© Dank Hearts Inc. All rights reserved.
■ 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
すばらしいげーむ
おもしろい
It's a pretty hard game, *especially* if you're playing it in English (make sure you have a guide! the Japanese->English translations are basically impossible to get right). Otherwise, the game is pretty good, though at least on Linux, it doesn't integrate with the desktop as well as it would on Windows.
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 47 reviews with recorded playtime.
おもしろかった
还不错的小品级游戏,有几个点有点吓人,总体还行,但是很多解密答案有点奇怪,有些问题甚至要结合Google搜索,建议可以改个形式,不允许玩家手动输入而是要从游戏内置的搜索引擎中点选答案。
解謎太刁鑽 逼人去看根本不會想到的地方 尤其是"裝了app的人才會看到的訊息"怎麼想都不應該是在商店頁面 而是在遊戲安裝資料夾比較合理吧
It was very enjoyable horror AI web puzzle, I really do, even trying to reply question or answer to Mina/Sato and finish the game to the end. The story, it was well hidden of normal people doesn't know what's happening. For me I would know something was odd of why she suddenly chat me and not even have a nice to meet you way. So of course it was suspicious of her, if only other replies we talk to her can actually make her more liking to what we said to her, even she knows where your PC and where you lived is too, was surprising me. Overall, I enjoyed it, hoping there's a game like this to reply that an AI could accept it.
ひえーよくできてるな 怖かった
システムはとても面白いのですが、チャットの返答が固定されていたり、チャットで好感度を上げるタイムがのときに彼女のご機嫌取りをしなくてはいけないような気持になったのがしんどかったというのが正直な感想です。あと、中断してしまうと必要なページが自動的に開かないようなので、まとまった時間があるときにやったほうがいいと思いました。
ミナが嫌いなタイプすぎて好感度が上がらず辞めた。 デジタルアニマは面白かったけどミナで脱落 最後までプレイしたら面白いんだろうなとは思う
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.