
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.
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
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
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
基本的には、[spoiler]ミナのご機嫌を取る[/spoiler]ゲーム。 ただ、ストーリー上なぜそれをしなきゃいけないのかの正当性はなかった([spoiler]というか、その点は恨むべき部分では?[/spoiler])し、もっと別の[spoiler]ご褒美[/spoiler]が妥当じゃないかなと思った。 (あと[spoiler]「へー」とか「うん」でも好感度上がるなら、[/spoiler]このシステムは余計に感じる) みんなも言っているとおり、ヒントはすくない。 こちらの察し能力が試される感じ。ARGに慣れ親しんだ人はわかるのかもしれない。 ホラー的な演出はよかった。必要ないものを除いて、ブラウザARGじゃできないのはここだけだと思う。
👍️
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 47 reviews with recorded playtime.
gercekten zaman öldürmelik bir oyun. gercekten mesajlasmanın hicbir anlamı yok. Tamamıyla oyunun aradığı anahtar kelimeyi girmeniz gerekiyor. Puzzle'lar gereksiz zor. Sebebi çeviri. Wiki'siz oynanmayacak wiki olsada oynanmaya gerek olmayan bi yapım. Oynamadan önce ölmeniz gereken türlerden.
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。
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
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.
Its good, but at least, give acceptable answer between capitalize letter and not, refusing to work just because i wrote satoshi, and not Satoshi, is pretty annoying....
This game was AMAZING! Scared me, made me laugh, made me think, this was an all in one game! Hope the devs make a part 2 or another game like this! Some problems with translations, tho that's the only problem!
i loved this game ahhhhh its very peak! the story was actually very intresting to uncover
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
Related
| House Flipper | $65.8M | 110.8K | 94% | $24.99 |
| Spilled! | $1.1M | 5.2K | 94% | $5.99 |
| OZMAFIA!! | $854.1K | 685 | 82% | $34.99 |
| Caravanners | $499.7K | 695 | 37% | $10.79 |
| A Webbing Journey | $459.4K | 1.3K | 99% | $9.99 |
| My Little Blacksmith Shop | $418K | 1.2K | 70% | $9.99 |