
The world ended. Now the real nightmare begins. Deep underground, a child wakes in a infected facility. Minds are breaking. Bodies are changing. Crawl through vents, follow echoes, and escape before it’s too late. Your mother is waiting.
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About

The war ended in a blinding flash. Now, the earth is hollow, a fractured shell hiding the remnants of humanity. A new era of evolution is about to begin. Survivors fled underground, but salvation was a lie. A sickness spread, warping minds, twisting bodies. No one is being spared.
You are a child, taken to a hidden facility deep below the surface. You don’t know why. Only that you’re sick. That everyone is. And something is wrong.You have to escape. Crawl through the vents. Follow the echoes to get to the surface. Your mother is waiting for you.

Wander through a decaying underground facility where nothing feels stable. Every room hides secrets, every object whispers fragments of a story you were never meant to uncover.

The bunker is not empty. Strange figures linger in the shadows, some helpful, some deceptive, none entirely trustworthy. Their words may reveal truth… or bury it deeper.

A labyrinth of vents and passages twisting into the dark. Something moves inside, creatures that stalk and listen in the silence. Paths split, shift, and close behind you. There is no turning back.

Though your journey branches in countless directions, they all lead toward the same haunting revelation. What you find depends not just on where you go, but on what you dare to see.
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Languages: English**languages with full audio support
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Reviews
[English] To be honest, "R.A.T. : Human Error – Episode One" surprised me much more positively than I had expected. After just a short time playing, it becomes clear that a lot of heart and soul and creative energy have gone into this game. Stylistically, the game is strongly reminiscent of titles such as "Fran Bow" or "Sally Face", both in terms of atmosphere and narrative approach. Anyone who liked these games will quickly feel at home here. The dark mood is lightened by quirky, humorous elements and memes, which appear mainly in hidden secrets and give the game its own identity. The story is particularly noteworthy: it feels well thought out and tackles more serious topics without becoming too heavy or depressing. Instead, the game manages an interesting balancing act between emotional depth and humorous moments, which makes for a surprisingly varied experience. The puzzle parts are not particularly well developed at this stage, in terms of being too easy or being not enough for my taste, but that's not necessarily a bad thing. On the contrary, it works well for the introduction, as the focus is clearly on atmosphere and story. It feels more like a foundation on which future episodes can build. It's also impressive that the game was developed by just one person. Given this, the result is remarkable, both technically and creatively. In summary: “R.A.T.: Human Error – Episode One” is a promising start with a strong atmosphere, an interesting story, and its own unique humor. Minor weaknesses, such as in the puzzle design, are hardly significant, especially when you consider that the project was created by a single person. Definitely recommended for fans of story-driven indie horror adventures. In addition, it will be very interesting to see where this game might go someday! ------------------------------------ [Deutsch] „R.A.T. : Human Error – Episode One“ hat mich ehrlich gesagt deutlich positiver überrascht, als ich es erwartet hätte. Schon nach kurzer Spielzeit wird klar, dass hier viel Herzblut und kreative Energie eingeflossen sind. Stilistisch erinnert das Spiel stark an Titel wie "Fran Bow" oder "Sally Face", sowohl in Atmosphäre als auch im Erzählansatz. Wer diese Spiele mochte, wird sich hier schnell zuhause fühlen. Die düstere Grundstimmung wird durch schräge, humorvolle Elemente und Memes aufgelockert, die vor allem in versteckten Secrets auftauchen und dem Spiel eine eigene Identität verleihen. Besonders hervorzuheben ist die Story: Sie wirkt durchdacht und greift ernstere Themen auf, ohne dabei zu schwer oder bedrückend zu werden. Stattdessen schafft das Spiel einen interessanten Spagat zwischen emotionaler Tiefe und humorvollen Momenten, was das Erlebnis überraschend abwechslungsreich macht. Der Rätselanteil ist zum jetzigen Zeitpunkt noch nicht besonders ausgearbeitet, was jedoch nicht unbedingt negativ auffällt. Im Gegenteil: Für den Einstieg funktioniert das gut, da der Fokus klar auf Atmosphäre und Story liegt. Es wirkt eher wie ein Fundament, auf dem zukünftige Episoden weiter aufbauen können. Beeindruckend ist außerdem, dass das Spiel von nur einer einzigen Person entwickelt wurde. Angesichts dessen ist das Ergebnis bemerkenswert, sowohl technisch als auch kreativ. Zusammenfassend lässt sich sagen: „R.A.T. : Human Error – Episode One“ ist ein vielversprechender Start mit starker Atmosphäre, interessanter Story und eigenem Humor. Kleinere Schwächen, etwa beim Rätseldesign, fallen kaum ins Gewicht, vor allem, wenn man bedenkt, dass das Projekt von einer Einzelperson stammt. Für Fans storylastiger Indie-Horror-Adventures definitiv eine Empfehlung. Außerdem wird es sehr interessant sein zu sehen, wohin sich dieses Spiel eines Tages entwickeln könnte. Müsst ihr Wissen!
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Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 38 reviews with recorded playtime.
its got really good art that reminds me of sally face
Twisted, cool art, aesthetic and atmosphere. Good sound design and framing for exploring the story. Fun enough and cute jokes but the vents didn't feel threatening after a while. Some unsubtle dialogue from a few characters that is fairly eye-rolling but doesn't actually give away the story yet so it's not too immersion breaking. Can't wait to see more from this game.
Overall, this game was really cute for a horror title. I liked it a lot. The jokes were pretty cheesy. I hope the developer can make more games like this. The insert character was a neat addition.
i had fun. if you make the next ep paid, will pay and not feel guilty...but youre paying for my throat spray next time. 8/10 pretty fun. would reccomend!!!! :D now im thirsty for some juice tho.
I was really immersed in this universe. Kudos to the creator. I will be playing more of it and purchasing to support your work!
Very well done experience where everything comes together nicely. Piecing the narrative together through fragments, the charming illustrations, exploring the maze-like environment, all made me end up wondering about what happened in this world and what will happen to Brie in the hopefully next episodes.
Wow. Just wow. I'm going to be honest. I play a lot of horror games and somehow this game had me constantly sweating. I don't think I've ever played a psychological horror game as well executed as this one. I would 100% recommend this game to literally everyone. Although I have a couple of things to say. First of all, and I really don't want to be rude, you can go out of bounds on one of the vents that lead you to the janitor. There is a wall missing there when you're in the vents I'm guessing. Second, I have so many questions about Veronica. Is she the same patient who is considered [spoiler]dead[/spoiler]? Why is she the only person who appears to be both physically and mentally okay? I really can't wait to play chapter two :) I just want to thank CH3RZY for making such a beautiful masterpiece.
Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
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Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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