

Alteratio
Tersalos Studios · October 22, 2025 · Adventure, Horror, Thriller, Psychological Horror, Puzzle
Buy Alteratio from Steam at $0.99 — the cheapest of 1 store we compare.
Where to buy Alteratio — official stores
Alteratio price by region
Alteratio costs £0.89 in the United Kingdom, $0.90 in Georgia (USD), $0.99 in the United States, €0.99 in Europe (EUR), CA$1.29 in Canada, NZ$1.49 in New Zealand, A$1.50 in Australia, R$3.49 in Brazil and zł4.49 in Poland right now.
| Region | Best price | Official store | Key shop | Stores |
|---|---|---|---|---|
| £0.89 | £0.89 | — | 1 | |
| $0.90 | $0.90 | — | 1 | |
| $0.99 | $0.99 | — | 1 | |
| €0.99 | €0.99 | — | 1 | |
| CA$1.29 | CA$1.29 | — | 1 | |
| NZ$1.49 | NZ$1.49 | — | 1 | |
| A$1.50 | A$1.50 | — | 1 | |
| R$3.49 | R$3.49 | — | 1 | |
| zł4.49 | zł4.49 | — | 1 |
Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.
Screenshots
About Alteratio
Alteratio is a first-person psychological horror game where you search your house for clues about your parents' mysterious disappearance while evading a sinister creature inspired by First Nations folklore. Featuring atmospheric exploration, mind-bending puzzles, and relentless supernatural terror, it blends personal mystery with regional legend to create a chilling descent into your own deepest fears.
Game Description
Assume the role of a young college student who, upon returning home from a seemingly normal day, finds a terrifying reality: his parents have disappeared without a trace. What begins as a quiet search soon turns into a terrifying experience, as a dark and menacing presence begins to stalk you.
Immerse yourself in this first-person horror game filled with psychological scares, intricate puzzles, and gripping mysteries. With an atmospheric design that keeps you on edge, the game blends exploration, story-driven moments, and unexpected jump scares to keep players engaged. As the terror intensifies, you must not only confront the creature chasing you, but also your own deepest fears. In this harrowing journey of self-discovery, every decision will be crucial to your survival.
Story
Set in the rich cultural tradition of the First Nations of North America, in eastern Nova Scotia, this narrative introduces you to the Algonquians, who believed in an evil creature with spiritual power that haunted the inhabitants of the region.
In this story you play as Timmy, a young university student whose life is thrown into chaos after the mysterious disappearance of his parents.
The narrative weaves folklore and personal horror, drawing players into an immersive and chilling experience. Inspired by local legends, the game delivers a fresh perspective on psychological and supernatural terror.
Investigate the truth about what happened to your parents, solve puzzles and unravel the story as a strange creature stalks you. Explore a house full of dark secrets and uncover clues that slowly reveal the plot.
Game Mechanics
The game focuses on exploration and puzzle solving, where you will investigate every corner of the house in search of clues about your family's disappearance. The puzzles are designed to challenge your logic and mental agility, offering a constant challenge as you progress.
Throughout your search, you will avoid an evil presence that stalks you. The tension will increase as you explore, and you will always have to be aware of the sounds and movements around you. Every step counts, and the mystery behind your family's disappearance is waiting to be revealed.
Call to Action
Prepare to face your fears in a psychological horror experience that will challenge both your wits and your courage. Do you have what it takes to uncover the truth behind your family's disappearance and survive the darkness that stalks you? Dive into this game and face the nightmare that awaits you.
Alteratio — game info
- Platforms
- Windows
- Player modes
- Single-player
- PC Game Pass
- Not included
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
Para ser un 1er juego y sacarlo por 3 dolares es respetable su apuesta, pero no quita el hecho de que hay varios aspectos en cuanto al gameplay y narrativa que se deben pulir y mejorar: - Me siento perdido en cuanto a que debo hacer y buscar (despues de obtener la carta del abuelo, no se que podia hacer) - Los elementos de inventario tienen una hitbox muy pequeña y una animacion automatica cada vez que la cojes, teniendo al monstruo persiguiendome, me hace sentirme pillado e incapaz de moverme. ademas - El mapa de la casa se siente muy cerrado, teniendo solamente 3 lugares en lo cuales poder eludir al monstruo y termina siendo muy injusto si es que decido ir a zonas cerradas donde se progresa el juego. - El monstruo le falta pulir el pathfinding (se queda estatico en esquinas y escaleras) y se siente como un enemigo de mmo que el de un juego de terror, pero que en vez de hacerte daño, es un game over automatico, ademas de que no ayuda que su sonido se sienta mas en mi nuca que del mismo monstruo (al modelo del monstruo se les notaron algunos elementos flotantes y parece mas de plastico que un monstruo sacado de mitos nativos americanos) - Errores de ortografía y de formatos en…
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