Home / Games / The Citadel
The Citadel
The Citadel is a brutal first person shooter, and a love letter to classic games such as Marathon, Doom and Wolfenstein 3d. Descend into the depths of a dark citadel, and fight through 6 Episodes and 30 levels of action packed with 6 challenging bosses. Go forth, Martyr.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.
“Really great Doom-lik/Tactical-ish game! It is really unique in the pile of boomer shooter/Doom like games we got now day! And anime/Guro/Style are really great, The dev really go all out! You can see the passion of that guy while playing. Its feel really good when you playing a…”
— a player, Steam review · 6 hrs played“This game is quite... something. But definitely good, if you're willing to disregard some aspects I'll discuss here To start off, the game is a DOOM-inspired shooter. Therefore, the game is gory. There's a setting to turn that off, but it kind of takes away from the game. If you…”
— a player, Steam review · 9 hrs played“Great game that has a retro FPS aesthetic but brings in some newer design ideas, creating an interesting blend of old and new. The levels don't vary aesthetically but set themselves apart by having fairly unique designs. The weapons are super satisfying and apart from maybe one…”
— a player, Steam review · 9 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-11 13:36 UTC · history via SteamCharts.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Sorry for the inconvenient(2022/02/23)
The game was temporarily unplayable due to an update on February 22, 2022. We apologize for any inconvenience this may have caused. The game files have been replaced with playable ones as of now (2022
Minor minor minor minor update(still 2.17.4)
・remove the wearing power armor when you return to the hub area
Minor minor minor update(still 2.17.4)
Fixed ・HUD flickering on switching weapons ・not working "previous weapon" function
Minor update 2.17.4
・Changed the specification of power armor stomping. ・Fixed the problem that the maximum armor value is not taken over when loading. ・Laser designator shows safety distance. ・Flickering shown in some o
Games like The Citadel
From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.
Ion Fury
90.7% · 6,301 reviews
shares Boomer Shooter, 2 5d, 1990s, Gore
DOOM + DOOM II
96.2% · 19,095 reviews
shares Boomer Shooter, 2 5d, 1990s, Gore
Master Levels for Doom II
71.1% · 526 reviews
shares Boomer Shooter, 2 5d, 1990s, Gore
Selaco
92.1% · 4,502 reviews
shares Boomer Shooter, 2 5d, Gore, Old School
Turok
92.5% · 3,023 reviews
shares Boomer Shooter, 1990s, Gore, Old School
DOOM 64
93.0% · 5,300 reviews
shares Boomer Shooter, 1990s, Gore, Old School
Unreal Gold
89.6% · 1,516 reviews
shares Boomer Shooter, 1990s, Gore, Old School
Warhammer 40,000: Boltgun
90.1% · 12,434 reviews
shares Boomer Shooter, 1990s, Gore, Old School
Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Action, Casual, Indie |
| Player tags | FPS · Retro · Gore · Old School · Indie · Anime · Violent · Singleplayer · Shooter · 2.5D · Action · Sci-fi (SteamSpy community voting) |
| Features | Single-player · Family Sharing |
| Languages | English |
| Estimated owners | 0 – 20,000 (SteamSpy) |
| Official site | https://ci-en.dlsite.com/creator/3655 |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system OS: Windows 10 64 bit Processor: Intel Core i-5-10210U Memory: 8 GB RAM Graphics: NVIDIA GeForce 820M 1GB VRAM DirectX: Version 12 Storage: 800 MB available space