Screenshots
Watch trailer on Steam ↗Flat 9
Alessandro Arcangeli · Published by Alessandro Arcangeli
Positive — 100% positive (30 reviews) · 3 achievements
Last updated 4 Oct 2026
A psychological horror set in a deserted apartment, where you're trapped in a relentless cycle. Armed with a strange device, you must find and report every anomaly to escape. Can you make it past Flat 9?
£3.39
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Price history
Adventure, Indie, Simulation · 2025 · More under £5 games
Explore a tense psychological horror experience set in a deserted apartment. As you navigate through Flat 9, use your strange device to uncover and report every anomaly to escape the relentless cycle.
About this game
Sent to investigate an abandoned apartment, you are tasked with documenting strange occurrences using the A.D.D. (Anomaly Detection Device)—a specialized tool capable of detecting and repairing irregularities.
At first, the apartment seems perfectly normal, but as you explore, reality starts to shift. Objects move on their own, shadows flicker unpredictably, and unnatural occurrences manifest around you.
Gameplay
You are trapped in a loop in which you must identify all anomalies in the apartment to progress to the next one. Missing even a single anomaly will send you back to the previous floor.
Your mission is to address every anomaly you encounter and find a way out of Flat 9.
Content Warning
This is a psychological horror game that may contain jump scares and intense moments. Player discretion is advised.
Play Time
30-60 minutes
Difficulty
The ability to spot differences is key to overcoming the challenge.
Some anomalies are easy to detect, while others are more subtle and require closer observation.
Performance Tips
If you encounter frame lag or stuttering during gameplay, you can adjust your graphic settings to improve performance. Reducing these settings can lead to a smoother experience, allowing you to fully enjoy the game without interruptions.
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10
- Processor: Intel Core i7-4790
- Memory: 8 GB RAM
- Graphics: NVIDIA GTX 1060
- Storage: 4 GB available space
Recommended
- OS: Windows 11
- Processor: Intel Core i7-8700
- Memory: 8 GB RAM
- Graphics: NVIDIA GTX 1080
- Storage: 4 GB available space
Supported Languages
Latest news
Patch NotesOfficial
Minor Fixes and Improvements
Added an option to lower background atmospheric sounds. Fixed a glitch where the mirror sometimes appeared too dirty. {STEAM_CLAN_IMAGE}/45524854/78e5932a2c047723549b7de24e17ef17ebc0b4c2.jpg The tutorial letter in Collector Mode now appears only once. Optimized the broken plant anomaly.Read full article on Community Announcements ([IT] Agemina)Patch NotesOfficial
Day One Fixes – Patch Notes
Hey everyone! Thank you all for participating in the game’s launch! We've made some improvements based on early feedback. Here’s what’s new in the first update: Motion Blur Option: You can now enable or disable motion blur in the settings. Bug Fix: Fixed a rare issue where players could fall into the void after the first floor. Final Level Adjustment: We’ve rebalanced the final level slightly. Jump Scare Frequency: Some jump scares no longer repeat. Collection Mode Changes: This mode is meant for finding all anomalies after finishing the game. For this reason, error strikes and ambient sounds have been disabled. The help menu also provides a clearer explanation. We’re grateful for your support and feedback. For any further feedback or suggestions, feel free to reach out in the Community Hub. Stay tuned for more updates!Read full article on Community Announcements ([IT] Agemina)Patch NotesOfficial
A Quick Update Before Launch
Hey everyone! We’re just a few hours away from the official release, and we wanted to take a moment to share a quick update with you all. The final preparations are in full swing, and we’re making sure everything is as polished as possible for launch day. What We’ve Been Working On: Final Bug Fixes – We’ve been addressing some last-minute issues to ensure a smooth and immersive experience. Performance Improvements – Optimizing the game to run better across different hardware setups. Last-Minute Adjustments – Fine-tuning gameplay elements based on internal testing and feedback to ensure the best possible balance and experience. What’s Next? We’re incredibly excited for you to experience the game firsthand! After launch, we’ll be closely monitoring your feedback, addressing any issues that arise, and working on potential updates to refine and enhance the experience even further. Your support means the world to us, and we truly appreciate your patience and enthusiasm. Stay tuned for more updates, and get ready to jump in—release is just around the corner! See you soon in the game!Read full article on Community Announcements ([IT] Agemina)
