Blackthorne's Manor is an adventure developed by Error 404, released 9 December 2025 on PC (Microsoft Windows).
What Blackthorne's Manor is
Blackthorne's Manor is an adventure game developed by Error 404 and released in 2025. It is available on PC (Microsoft Windows) only. It runs on Unity 6.
The premise, in the publisher's words
Your friend vanished after attending a party at the manor, and no one has seen them since. Armed with little more than your wits and a faintly glowing lantern, you step inside, not knowing what you'll find on the other side. Shadowed rooms, cryptic puzzles, and fragments of a dark history wait around every corner. The manor’s decaying halls and strange, unsettling details hint at the sinister events that took place here. Can you uncover the secrets of Blackthorne’s Manor, or will its mysteries remain locked forever?
How it plays
It is played from a first person perspective. Its themes are historical, horror and mystery. It is a single-player game with no multiplayer component.
What it launched against
Blackthorne's Manor launched on 9 December 2025, within three weeks of Metroid Prime 4: Beyond, Routine, Kirby Air Riders and Marvel Cosmic Invasion.
Released around the same time: Metroid Prime 4: Beyond, Routine, Kirby Air Riders, Marvel Cosmic Invasion.
Official trailer
Sourced from the publisher’s YouTube channel.
Screenshots
All media
Quick answers
Blackthorne's Manor — frequently asked questions
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