Flat 9

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Flat 9

Short description

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?

Developer
Alessandro Arcangeli
Publisher
Alessandro Arcangeli
Release
Tue, Mar 18, 2025
Price
$3.99
Reviews
23
Positive
100%
Followers
90
Owners (estimated)
0 – 20K
Concurrent players
n/a
Genres
Adventure, Indie, Simulation
Features
Partial Controller Support, Steam Timeline
Tags
Indie Walking Simulator Horror First-Person Simulation Adventure Realistic Psychological Horror Hidden Object Puzzle Tutorial Controller 3D Dark Singleplayer Surreal
Revenue (estimated, gross)~$4ksomewhere between $2k and $7k · roughly 460–2K copies

Review count and SteamSpy's owner range agree well enough to narrow the estimate down to this band. Multiplied by the $3.99 launch price — there is not enough price history for this game to weight the copies by what they actually sold for. Before Steam's cut, VAT and refunds. How these numbers are calculated.

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History

Tracking started Oct 16, 2026. Charts appear once there is more than one data point — nothing has changed since.

How crowded is this niche?

How full the niche around Flat 9 is — measured on the tags it leads with, against every other combination on Steam.

±?? Indie + Walking Simulator + Horror

Combinations under 15 games are left out to reduce the influence of small samples. The games below share those tags and are free to browse.

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Similar games that found an audience

Games sharing at least 3 of this title's leading tags, with enough reviews to have gone somewhere. Ranked by how much they overlap, not by how big they are. − missing and + extra mark the tags each one does not share with Flat 9. Studio counts the titles that developer has released — the closest thing to production scale that public data allows. It is not a budget, and nobody publishes those.

Image Name Studio Shared Tag difference Price Reviews Positive Released Revenue (estimated)
Conarium Conarium Stormling Studios 5 titles 5 − Simulation + Lovecraftian $19.99
$3.59
82%
1,893 76% Tue, Jun 06, 2017 $1.4m
$846k – $1.7m
REVEIL REVEIL Pixelsplit 5 titles 5 − Simulation + Singleplayer $19.99 729 86% Wed, Mar 06, 2024 $345k
$251k – $345k
Coma: Mortuary Coma: Mortuary Naga Entertainment first game 5 − Simulation + Atmospheric $5.99 695 53% Mon, May 12, 2014 $142k
$63k – $910k
The Music Machine The Music Machine David Szymanski 15 titles 5 − Simulation + Psychological Horror $4.99
$0.99
80%
best price ever
497 88% Wed, May 06, 2015 $98k
$88k – $174k
ShadowSide ShadowSide AdroVGames 7 titles 5 − First-Person + Atmospheric $9.99 374 64% Fri, Aug 17, 2018 $172k
$172k – $258k

There are more like this. Your plan shows the 5 closest neighbours; Plus and Pro show up to 100 — enough to see the shape of a niche instead of a sample of it.

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