Osta Backrooms Anomaly PC

You are trapped in a looping corridor deep within Level 0 of the Backrooms.

Yellow walls stretch ahead beneath buzzing fluorescent lights. Everything looks familiar, but something never feels quite right. An object may be missing or no longer quite as you remember it. Other times, the corridor can transform into something deeply unsettling, or entities can appear where you least expect them.

Spot the anomalies

Examine the corridor carefully and decide whether something has changed. If you spot an anomaly, return to the entrance. If everything appears normal, continue through the exit.

Build your streak

Each correct decision builds your streak. One mistake resets it. Reach a streak of 10 to complete a survey cycle, recover a new field log, and advance the investigation into Level 0.

Recover the field logs

Recover nine field logs chronicling your assignment in Level 0. Piece them together to uncover fragments of your past, learn who sent you to catalogue the anomalies, and follow your growing suspicions about the researchers who came before you and the hazmat-suited Warden who patrols the corridor.

Discover all 70 anomalies to complete the catalogue and uncover the final entry.

Survive the corridor

Complete Classic Mode to unlock Survival Mode.

Multiple anomalies can appear in each corridor. Photograph them all before the timer expires and work your way through the entire catalogue. The run ends after three missed shots, when the timer expires, or if you are caught.

Review the evidence recovered from each Survival run and choose which photographs to preserve in your Steam screenshot library.

Features

• Discover 70 visual, audio, environmental, and entity-based anomalies

• Play on Normal or Hard difficulty

• Explore a meticulously crafted looping corridor deep within Level 0 with VHS camcorder visuals and immersive positional audio

• Build a streak of 10 to recover field logs and advance the investigation

• Unlock Survival Mode and photograph every anomaly in the catalogue against the clock

• Review recovered evidence and preserve selected photographs in your Steam screenshot library

• Use the terminal to track remaining anomalies, monitor your streak, and get hints about what you missed

• Customize graphics, audio, controls, and accessibility options, including reduced camera and transition flashes, interface color-vision settings, and the ability to disable head bobbing, motion blur, and VHS effects

• Steam Deck Verified with full controller support

Every loop brings you closer to understanding what is happening in Level 0. But the deeper you go, the stranger everything begins to feel.