Games like The Citadel on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like The Citadel are available at the bottom of the page.
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Quake
Developed by the award-winning id Software, Quake® is the ground-breaking, original dark fantasy first-person shooter that inspires today’s retro-style FPS games. With Quake (Enhanced), experience the authentic, updated, and visually enhanced version of the original.
PERISH
PERISH is a stylish 1-4 player FPS with a cross to bear. Slay hordes of creatures on the black sands of Purgatory and sell their gold-stained corpses to craven priests. Kill magnificent bosses and use the proceeds to gain entrance to Elysium, a place of cosmic revelations.
INCISION
All old-school FPS action. No Bullshit. Lots of blood & gore. Slaughter your way through nightmarish industrial mazes, transformed cityscapes and surreal alien structures to cut down the Growth in this ultraviolent, fast-paced, and merciless retro-styled first person shooter.
The Darkness II
An intense first person shooter that delivers a twisted and gripping narrative of tragedy, modern crime drama, and supernatural horror.
Serious Sam Classics: Revolution
Serious Sam is a high-adrenaline arcade-action shooter heavily focused on frantic action. In a world where cyberpunk meets fantasy-fiction and advanced technology is mixed with black magic and psycho-powers, Sam travels through four beautiful worlds, confronting countless foes on his way to Mental's base.
Serious Sam 4
Serious Sam 4 reignites the classic FPS series in a high-powered prequel loaded with an explosive arsenal, intergalactic carnage, and perfectly timed one-liners.
DOOM
Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression.
Shadow Warrior
Shadow Warrior is a bold reimagining of the classic 3D Realms’ shooter from independent developer Flying Wild Hog (Hard Reset) starring the legendary and quick-witted warrior Lo Wang.
DOOM Eternal
Hell’s armies have invaded Earth. Become the Slayer in an epic single-player campaign to conquer demons across dimensions and stop the final destruction of humanity. The only thing they fear... is you.
Project Warlock
Project Warlock is a first-person shooter that fans of Doom, Hexen, and Wolfenstein cannot miss. It serves you an exploding cocktail of bullets, spells, and monsters. Battle through 60 levels of non-stop action, packed with bloodthirsty enemies and challenging bosses.
RoboCop: Rogue City
Become the legendary part man, part machine, all cop hero and deliver justice in Old Detroit.
Quake 4
As part of the elite Rhino Squad, you must spearhead Earth’s military invasion of a hostile alien homeworld. But, in this desperate war for humanity’s survival against an unrelenting enemy, you may discover that the only way to defeat them...is to become one of them.
NecroVisioN: Lost Company
NecroVisioN: Lost Company is the prequel to original horror FPS shooter, taking place before the NecroVisioN story begins. It contains a bunch of unique levels, characters, weapons and gameplay elements as well as new main hero that presents the original game story from opposite perspective.
Serious Sam HD: The First Encounter
Serious Sam HD: The First Encounter is a visually upgraded and fully Steam supported remake version of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS which was Gamespot's Game of the Year 2001 and which scored overall of 87% on Metacritic!
Supplice
Supplice is a stylish throwback shooter inspired by the mid-90s FPS glory days and the legendary Doom modding community. Mixing the retro stylings of 90s era shooters with colorful graphics and frantic gameplay, it creates an experience that's ever so familiar but also exciting and fresh.
Forgive Me Father
Forgive Me Father is a dark retro horror FPS set in a comic book style world inspired by the novels of H.P. Lovecraft. As the only one left with full senses, you begin a journey in search of answers and relief. How long can you last?
Nightmare Reaper
Progress through the cursed depths of a nightmare while finding an arsenal of powerful weapons and improving your abilities along the way. This retro-inspired FPS with looter shooter and rogue-lite elements breaches the wall between classic and modern gameplay.
I Am Your Beast
Hunt the military-industrial complex across stylish comic book micro-sandboxes in this fast-paced covert revenge thriller FPS from the developers of El Paso, Elsewhere.
Phantom Fury
Shelly “Bombshell” Harrison is back in this highly interactive mix of first person action and road movie adventure. Embark on an adrenaline-fueled journey around the USA. Use an enormous arsenal of weapons and skills to battle treacherous soldiers and vile mutants, all while trying to save mankind.
F.E.A.R. 2: Project Origin
Assume the role of Special Forces Sgt. Becket as your routine mission quickly turns into a fight for survival against the wrath of Alma Wade. As Alma's terrifying power surges out of control, your squad is forced to battle through an apocalyptic landscape in search of clues for how to destroy her!
Serious Sam VR: The Last Hope
Serious Sam is back! And this time it's REAL!
Painkiller: Black Edition
Painkiller Black Edition includes the expansion pack Battle Out of Hell, featuring 10 additional single-player levels and many new villains.
Valfaris
Set in a far corner of space, Valfaris is a heavy metal infused 2D action-platformer and the next game from the team behind Unity Awards finalist, Slain: Back From Hell. Brutal combat. Deadly enemies. Stunning pixel art. Savage soundtrack. Get ready to rip the galaxy a new wormhole.
Most played games like The Citadel on Steam
Take a look at the top games like The Citadel that are currently attracting the largest player bases on the Steam platform, as of June 16th 2025.
1. DOOM: The Dark Ages
Similarity 43% DOOM: The Dark Ages is the prequel to the critically acclaimed DOOM (2016) and DOOM Eternal that tells an epic cinematic story worthy of the DOOM Slayer’s legend. Players will step into the blood-stained boots of the DOOM Slayer, in this never-before-seen dark and sinister medieval war against Hell. DOOM: The Dark Ages is a action, fps and demons game developed by id Software and published by Bethesda Softworks. Released on May 14th 2025 has received 21,671 reviews of which 18,891 were positive and 2,780 were negative resulting in a rating of 8.5 out of 10. The game has hit the top spot as the #1 most played game like The Citadel, thanks to its 2,635 peak concurrent players over the last day.
8.5
18,891
2,780
2,635
players
2. DOOM Eternal
Similarity 52% Hell’s armies have invaded Earth. Become the Slayer in an epic single-player campaign to conquer demons across dimensions and stop the final destruction of humanity. The only thing they fear... is you. DOOM Eternal is a fps, action and gore game developed by id Software and published by Bethesda Softworks. Released on March 19th 2020 has received 206,026 reviews of which 187,807 were positive and 18,219 were negative resulting in an impressive rating of 9.0 out of 10. While seeing 1,950 players online at once in the last 24 hours, this game is currently ranked #2 among games like The Citadel based on player count.
9.0
187,807
18,219
1,950
players
3. DOOM
Similarity 53% Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression. DOOM is a fps, gore and action game developed by id Software and published by Bethesda Softworks. Released on May 12th 2016 has received 207,279 reviews of which 198,001 were positive and 9,278 were negative resulting in an impressive rating of 9.4 out of 10. While seeing 1,441 players online at once in the last 24 hours, this game is currently ranked #3 among games like The Citadel based on player count.
9.4
198,001
9,278
1,441
players
4. KovaaK's
Similarity 41% Master your aim with KovaaK’s, the world’s best aim trainer. With over 200,000 scenarios, playlists and more! Embrace total customization, including a map editor and game physics. More than just a trainer, it’s a dynamic, community-driven platform that elevates your gameplay. KovaaK's is a action, shooter and simulation game developed and published by KovaaK Games. Released on April 03rd 2018 has received 35,305 reviews of which 32,776 were positive and 2,529 were negative resulting in an impressive rating of 9.1 out of 10. With 1,425 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like The Citadel.
9.1
32,776
2,529
1,425
players
5. STRAFTAT
Similarity 41% STRAFTAT video game ::::::::::::::::::::: 1v1 ONLINE first person pov SHOOTER ::::::::::::::: quick rounds in 150 MAPS ::::::::::::: Including all WEAPONS and proximity chat STRAFTAT is a action, shooter and fps game developed by Sirius Lemaitre and Leonard Lemaitre and published by Lemaitre Bros. Released on October 24th 2024 has received 8,446 reviews of which 8,149 were positive and 297 were negative resulting in an impressive rating of 9.3 out of 10. With 440 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like The Citadel.
9.3
8,149
297
440
players
6. Wolfenstein: The New Order
Similarity 49% Wolfenstein®: The New Order reignites the series that created the first-person shooter genre. Wolfenstein offers a deep game narrative packed with action, adventure and first-person combat. Wolfenstein: The New Order is a fps, action and alternate history game developed by MachineGames and published by Bethesda Softworks. Released on May 19th 2014 has received 56,469 reviews of which 51,691 were positive and 4,778 were negative resulting in an impressive rating of 9 out of 10. With 410 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like The Citadel.
9
51,691
4,778
410
players
7. DOOM + DOOM II
Similarity 55% Developed by id Software, and originally released in 1993 and 1994, the definitive, newly enhanced versions of DOOM + DOOM II are available as a combined product. DOOM + DOOM II is a fps, classic and 1990's game developed by id Software and Nightdive Studios and published by Bethesda. Released on August 03rd 2007 has received 24,984 reviews of which 24,105 were positive and 879 were negative resulting in an impressive rating of 9.4 out of 10. With 371 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like The Citadel.
9.4
24,105
879
371
players
8. Hotline Miami 2: Wrong Number
Similarity 44% Hotline Miami 2: Wrong Number is the brutal conclusion to the Hotline Miami saga, set against a backdrop of escalating violence and retribution over spilled blood in the original game. Hotline Miami 2: Wrong Number is a great soundtrack, gore and pixel graphics game developed by Dennaton Games and published by Devolver Digital. Released on March 10th 2015 has received 66,634 reviews of which 62,741 were positive and 3,893 were negative resulting in an impressive rating of 9.3 out of 10. With 356 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like The Citadel.
9.3
62,741
3,893
356
players
9. Wolfenstein II: The New Colossus
Similarity 59% America, 1961. The assassination of Nazi General Deathshead was a short-lived victory. The Nazis maintain their stranglehold on the world. You are BJ Blazkowicz, aka “Terror-Billy,” member of the Resistance, scourge of the Nazi empire, and humanity’s last hope for liberty. Wolfenstein II: The New Colossus is a fps, action and gore game developed by Machine Games and published by Bethesda Softworks. Released on October 26th 2017 has received 44,497 reviews of which 36,084 were positive and 8,413 were negative resulting in a rating of 8.0 out of 10. With 333 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like The Citadel.
8.0
36,084
8,413
333
players
10. GoreBox
Similarity 42% GoreBox is a chaotic physics-driven sandbox where creativity meets destruction. Use the Reality Crusher to spawn, manipulate, and obliterate anything. Customize, battle with friends, roleplay, or face devious creatures. In this world, your imagination rules—and chaos is your playground! GoreBox is a gore, sandbox and violent game developed by Felix Filip and published by F²Games. Released on July 21st 2023 has received 14,504 reviews of which 13,136 were positive and 1,368 were negative resulting in a rating of 8.8 out of 10. With 328 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like The Citadel.
8.8
13,136
1,368
328
players
Best deals on games like The Citadel on Steam
Discover fantastic savings with the best discounts on a variety of games like The Citadel available on Steam right now, updated on June 16th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like The Citadel.
1. Prodeus
Similarity 69% Prodeus is a first-person shooter of old, re-imagined using modern rendering techniques and technology. Experience the quality you’d expect from a modern AAA game, designed with retro aesthetics and gameplay that invoke the tech-imposed limits of older hardware. Prodeus is a boomer shooter, fps and retro game developed by Bounding Box Software Inc. and published by Humble Games. Released on September 23rd 2022 has received 7,556 reviews of which 7,021 were positive and 535 were negative resulting in an impressive rating of 9 out of 10. Featuring a massive 99% discount, this game currently holds the #1 spot in the best deals for games like The Citadel.
9
7,021
535
-99%
24.99€
0.49€
2. Serious Sam VR: The Last Hope
Similarity 49% Serious Sam is back! And this time it's REAL! Serious Sam VR: The Last Hope is a vr, action and gore game developed by Croteam VR and published by Devolver Digital and Croteam. Released on September 20th 2017 has received 1,395 reviews of which 1,180 were positive and 215 were negative resulting in a rating of 8.1 out of 10. Thanks to its incredible 98% discount, this game is now the #2 best deal in games like The Citadel.
8.1
1,180
215
-98%
28.99€
0.58€
3. F.E.A.R. 3
Similarity 42% F.E.A.R. 3 delivers all the hallmarks that define the F.E.A.R. brand: terrifying paranormal experience, frenetic combat and a dramatic storyline. F.E.A.R. 3 is a fps, horror and co-op game developed by Day 1 Studios and published by Warner Bros. Interactive Entertainment. Released on June 21st 2011 has received 12,758 reviews of which 9,070 were positive and 3,688 were negative resulting in a rating of 7.0 out of 10. Thanks to its incredible 98% discount, this game is now the #3 best deal in games like The Citadel.
7.0
9,070
3,688
-98%
19.99€
0.45€
4. Necromunda: Hired Gun
Similarity 46% Become a Hired Gun. The money’s good, the dog’s loyal, and the gun’s reliable. Embark on a fast-paced, violent, and thrilling FPS set in the darkest reaches of Warhammer 40,000’s most infamous hive city. Necromunda: Hired Gun is a action, warhammer 40k and adventure game developed by Streum On Studio and published by Focus Entertainment. Released on May 31st 2021 has received 7,422 reviews of which 4,864 were positive and 2,558 were negative resulting in a rating of 6.5 out of 10. Currently offered at a significant 98% discount, this title has earned the #4 position in the best deals for games like The Citadel.
6.5
4,864
2,558
-98%
39.99€
1.15€
5. GARAGE: Bad Trip
Similarity 46% Drug dealer Butch slays hordes of living dead to save a girl. Garage is a bloody topdown shooter inspired by VHS era B-movies. GARAGE: Bad Trip is a gore, action and violent game developed by Zombie Dynamics and published by tinyBuild. Released on July 06th 2018 has received 775 reviews of which 513 were positive and 262 were negative resulting in a rating of 6.4 out of 10. Currently offered at a significant 98% discount, this title has earned the #5 position in the best deals for games like The Citadel.
6.4
513
262
-98%
14.79€
0.39€
6. The Darkness II
Similarity 54% An intense first person shooter that delivers a twisted and gripping narrative of tragedy, modern crime drama, and supernatural horror. The Darkness II is a fps, action and gore game developed by Digital Extremes and published by 2K. Released on February 09th 2012 has received 19,772 reviews of which 18,121 were positive and 1,651 were negative resulting in a rating of 9.0 out of 10. Currently offered at a significant 97% discount, this title has earned the #6 position in the best deals for games like The Citadel.
9.0
18,121
1,651
-97%
29.99€
1.07€
7. Shadow Warrior 2
Similarity 43% Shadow Warrior 2 is the stunning evolution of Flying Wild Hog’s offbeat first-person shooter starring the brash warrior Lo Wang, who must again wield a devastating combination of guns, blades, magic and wit to strike down the demonic legions overwhelming the world. Shadow Warrior 2 is a action, gore and looter shooter game developed by Flying Wild Hog and published by Devolver Digital. Released on October 13th 2016 has received 27,230 reviews of which 23,758 were positive and 3,472 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 97% discount, this title has earned the #7 position in the best deals for games like The Citadel.
8.6
23,758
3,472
-97%
28.99€
1.11€
8. Duke Nukem 3D: 20th Anniversary World Tour
Similarity 56% Frag like it’s 1996 – this time with even more asses to kick! Join the world’s greatest action hero in Duke Nukem 3D: 20th Anniversary World Tour as he saves Earth once again, kicking alien ass and saving babes across the globe along the way. Duke Nukem 3D: 20th Anniversary World Tour is a fps, classic and action game developed by Nerve Software, Gearbox Software and LLC and published by Gearbox Publishing. Released on October 11th 2016 has received 5,684 reviews of which 4,802 were positive and 882 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 97% discount, this title has earned the #8 position in the best deals for games like The Citadel.
8.2
4,802
882
-97%
19.99€
0.76€
9. Dread Templar
Similarity 56% Dread Templar is a fast-paced hardcore old-school FPS, combining classic 90s shooter and modern FPS elements. Unlock and combine dozens of weapon upgrades and skills, embrace the Dread Force and obliterate hordes of fiendish enemies. Become the scariest thing in hell and get your revenge! Dread Templar is a boomer shooter, fps and retro game developed by T19 Games and published by Fulqrum Publishing. Released on January 26th 2023 has received 1,509 reviews of which 1,256 were positive and 253 were negative resulting in a rating of 8.0 out of 10. Currently offered at a significant 97% discount, this title has earned the #9 position in the best deals for games like The Citadel.
8.0
1,256
253
-97%
19.99€
0.72€
10. Valfaris
Similarity 49% Set in a far corner of space, Valfaris is a heavy metal infused 2D action-platformer and the next game from the team behind Unity Awards finalist, Slain: Back From Hell. Brutal combat. Deadly enemies. Stunning pixel art. Savage soundtrack. Get ready to rip the galaxy a new wormhole. Valfaris is a action, indie and gore game developed by Steel Mantis and published by Silver Lining Interactive. Released on October 10th 2019 has received 2,534 reviews of which 2,093 were positive and 441 were negative resulting in a rating of 8.0 out of 10. Currently offered at a significant 97% discount, this title has earned the #10 position in the best deals for games like The Citadel.
8.0
2,093
441
-97%
20.99€
0.71€
Free games like The Citadel on Steam
Check out this fantastic list of free-to-play games like The Citadel you can enjoy on Steam right now, updated on June 16th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like The Citadel.
1. STRAFTAT
Similarity 41% STRAFTAT video game ::::::::::::::::::::: 1v1 ONLINE first person pov SHOOTER ::::::::::::::: quick rounds in 150 MAPS ::::::::::::: Including all WEAPONS and proximity chat STRAFTAT is a action, shooter and fps game developed by Sirius Lemaitre and Leonard Lemaitre and published by Lemaitre Bros. Released on October 24th 2024 has received 8,446 reviews of which 8,149 were positive and 297 were negative resulting in an impressive rating of 9.3 out of 10. With 440 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like The Citadel.
9.3
8,149
297
440
players
2. Combat Arms: the Classic
Similarity 47% Combat Arms: the Classic is a multiplayer game, free-to-play modern first-person shooter. The game is a relaunch of Combat Arms in its glory days delivering gamers a nostalgic high-quality FPS with an extensive arsenal of weapons. Combat Arms: the Classic is a free to play, action and fps game developed by VALOFE and NEXON and published by VALOFE. Released on July 14th 2020 has received 1,927 reviews of which 1,247 were positive and 680 were negative resulting in a rating of 6.3 out of 10. The game currently holds the #2 spot among the most played free games like The Citadel.
6.3
1,247
680
69
players
3. PAPERHEAD EP.0
Similarity 47% In this cute cardboard world, something went horribly wrong... You wake up in a prison cell. A strange voice calls to you from the depths of dark corridors covered in runic symbols and blood. Reload your trusty shotgun and find out... WHY WOULD CARDBOARD... BLEED? PAPERHEAD EP.0 is a fps, fast-paced and singleplayer game developed by Paperhead te4m and published by HypeTrain Digital. Released on November 14th 2024 has received 1,842 reviews of which 1,717 were positive and 125 were negative resulting in a rating of 8.9 out of 10. The game currently holds the #3 spot among the most played free games like The Citadel.
8.9
1,717
125
32
players
4. Quake II RTX
Similarity 51% Quake II RTX is a cutting-edge, ray-traced reimagining of id software’s old school classic, by NVIDIA’s Lightspeed Studios. Global lighting effects, including realistic reflections, refraction, shadows, ambient occlusion and global illumination are a result of the path-traced simulation of light. Quake II RTX is a free to play, action and fps game developed by Lightspeed Studios™ and published by NVIDIA. Released on June 06th 2019 has received 4,590 reviews of which 4,009 were positive and 581 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #4 spot among the most played free games like The Citadel.
8.4
4,009
581
14
players
5. RED HOT VENGEANCE
Similarity 49% He had one rule: No killing women or children. When a hitman is double-crossed by his employer, he brings forth a night of carnage and bloodshed. RED HOT VENGEANCE is a free to play, violent and gore game developed and published by Bros Before Giraffes. Released on July 11th 2019 has received 3,428 reviews of which 3,291 were positive and 137 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #5 spot among the most played free games like The Citadel.
9.2
3,291
137
7
players
6. A.W.O.L.
Similarity 50% A.W.O.L. is a first-person, mil-spec shooter developed using the Build engine (Duke Nukem 3D, Ion Fury). A.W.O.L. is a fps, action and shooter game developed and published by Shotspark Studios. Released on September 15th 2022 has received 1,044 reviews of which 835 were positive and 209 were negative resulting in a rating of 7.6 out of 10. The game currently holds the #6 spot among the most played free games like The Citadel.
7.6
835
209
4
players
7. AQtion
Similarity 50% Get ready for intense, skill-based FPS action with AQtion! Featuring the best of Action Quake 2, enjoy fast-paced combat, realistic weapons, and thrilling multiplayer battles. Dominate the arena now on Steam! AQtion is a free to play, old school and action game developed by AQ2World Team, TNG Team and A-Team (Akimbo) and published by AQ2World Team. Released on June 01st 2022 has received 424 reviews of which 336 were positive and 88 were negative resulting in a rating of 7.5 out of 10. The game currently holds the #7 spot among the most played free games like The Citadel.
7.5
336
88
3
players
8. Shrine II
Similarity 52% Shrine II is a retro FPS game with a focus on atmosphere and exploration. Explore a nightmarish world and battle great bosses where the surprises never end... Shrine II is a action, fps and shooter game developed by Scumhead and Mengo and published by Scumhead. Released on September 22nd 2020 has received 835 reviews of which 773 were positive and 62 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #8 spot among the most played free games like The Citadel.
8.7
773
62
2
players
9. Rebel Forces
Similarity 42% Are you ready to be the ultimate soldier and fight until you defeat all of your enemies? Rebel Forces is a free to play, action and indie game developed and published by FreezeNova. Released on December 20th 2018 has received 1,611 reviews of which 1,323 were positive and 288 were negative resulting in a rating of 7.9 out of 10. The game currently holds the #9 spot among the most played free games like The Citadel.
7.9
1,323
288
2
players
10. Devolverland Expo
Similarity 46% Devolverland Expo is a first-person 'marketing simulator' set within an abandoned convention center after the annual Devolver Digital game expo was mysteriously canceled. Devolverland Expo is a free to play, action and fps game developed by Flying Wild Hog and published by Devolver Digital. Released on July 11th 2020 has received 5,726 reviews of which 5,110 were positive and 616 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #10 spot among the most played free games like The Citadel.
8.6
5,110
616
1
players