Demo Free to play App 5111940 Game: The Citadel Project

The Citadel Project - Demo

Reliquary Software · released Sep 30, 2026

The Citadel Project is a first-person stealth game with lite survival-horror elements, inspired by the Thief series and set in a dark fantasy world. Use your tools and surroundings wisely, stay hidden in the shadows, and uncover the dark secrets behind the Citadel's downfall.

StoreSteam store

Data updated 3d ago

Price

Free

US store

Reviews

90%

31 · Positive

Playing now

—

not sampled yet

24h peak

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all-time seen —

Followers

—

Steam community hub

Owners (est.)

—

from review count

Revenue (est.)

—

gross, lifetime · how

Product info

from Steam's PICS · read 2d ago

Change number: 40,832,145 · seen 2d ago
Public build: 26,026,575 · Oct 18, 2026 (26d ago)
Operating systems: windows
Architecture: 64-bit
Install size: 3.4 GB · 3.1 GB download
Install folder: The Citadel Project Demo
Controller support: —
Metacritic: —
Homepage: —
Release state: released
Community: stats

Steam Deck

Unknown

No Deck test results published.

Branches · 1

every build Steam serves for this app

Branch	Build	Updated	Description
public	26,026,575	Oct 18, 2026 · 26d ago

Build history

every build id we have seen on a branch (history starts with our first read)

Build	Branch	Released	First seen
26,026,575	public	Oct 18, 2026 13:58	4d ago

Depots · 4

content of the public branch

Depot	OS	DLC / shared	Size	Download	Manifest
5111941	windows 64-bit		3.4 GB	3.1 GB	5556335320741888435
5111942	windows 64-bit		—	—
228989	windows	shared from #228980	—	—
228990	windows	shared from #228980	—	—

Launch options · 1

Executable	OS	Description
`TheCitadelProject.exe`	windows

Languages · 1

Language	Interface	Full audio	Subtitles
English	✓	✓	✓

Packages · 1

all packages

Sub	Name	Billing	Price
1770688	—	Free on demand	—

Bundles · 0

all bundles

Not part of any bundle we know.

Change numbers

all changes

#40,832,145 · 2d ago

Updates · patch notes

Steam announcements tagged as patch notes, linked to the public build they followed

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No patch notes seen yet for this game.