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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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.
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.
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.
Deathmatch Classic
Enjoy fast-paced multiplayer gaming with Deathmatch Classic (a.k.a. DMC). Valve's tribute to the work of id software, DMC invites players to grab their rocket launchers and put their reflexes to the test in a collection of futuristic settings.
Devolverland Expo
Devolverland Expo is a first-person 'marketing simulator' set within an abandoned convention center after the annual Devolver Digital game expo was mysteriously canceled.
Return to Castle Wolfenstein
World War II rages and nations fall. The Nazis are twisting science and the occult into an army capable of annihilating the Allies once and for all. As US Army Ranger William “B.J.” Blazkowicz, pierce the black heart of the Third Reich and stop them...or die trying.
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.
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.
Half-Life Deathmatch: Source
Half-Life Deathmatch: Source is a recreation of the first multiplayer game set in the Half-Life universe. Features all the classic weapons and most-played maps, now running on the Source engine.
Valfaris: Mecha Therion
Therion returns as the hunt for Lord Vroll continues. Pilot an advanced machine of death and destruction in this explosive 2.5D side-scrolling shoot ‘em up, and sequel to the critically acclaimed Valfaris. Strap in and unleash mecha hell!
Vomitoreum
Vomitoreum is an FPS Metroidvania with a focus on atmosphere and horror, inspired by the paintings of Zdzisław Beksiński.
Operation Warcade VR
Relive the experience of playing the classic war arcade in a totally amazing way, thanks to virtual reality and the innovative immersion system that will make it possible for you to travel inside the video game.
Kingpin — Life of Crime
Kingpin is a tale of revenge. Take control of a street gang and order your recruits to attack, defend or even do a little safe-cracking to pick up some needed cash. Use that cash to buy nastier weapons and take down your punk enemies in this intense first-person shooter. Being the Kingpin is half attitude and all action.
Sniper Killer
Eliminate your victims as a serial killer dubbed ‘The Sniper Killer’. Terrorize the city with your keen eye and thirst for blood while staying one step ahead of a detective hell bent on bringing you to justice.
Let Them Come
Let Them Come is a fast paced pixel art shoot ‘em up. Twitchy trigger fingers and focused battle tactics are the order of the day as wave after wave of alien-like creatures try to take you down.
Chambers: The Outlaw
Take a bite of GETTING CHAMBERED in the Wild West: improvise to survive. Feed and take care of your horses. Open World with warring factions. Skills and upgrades: catch bullets, eat hats, summon bears. Revolver Monsters!
Nightmare of Decay
A first-person action horror game set in a nightmarish manor infested with zombies, psychotic cultists, and a horde of other horrors. Utilize an assortment of different weapons in a brutal fight for survival as you try to escape from the Nightmare of Decay.
Quake II RTX
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.
Lost in Vivo
A horror game about claustrophobia. During a storm your service dog is forced down a broken sewer drain. You find the nearest sewer entrance and run in after it. Along the way you will meet others that are also stricken by abnormal or psychological fear.
Rise of the Triad
Apogee Software and Interceptor Entertainment proudly present the rebirth of the cult-classic first-person shooter, “Rise of the Triad”. Bigger, better and more ludicrous than ever before.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 April 16th 2025.
1. Hell Let Loose
Similarity 52% Join the ever expanding experience of Hell Let Loose - a hardcore World War Two first person shooter with epic battles of 100 players with infantry, tanks, artillery, a dynamically shifting front line and a unique resource based RTS-inspired meta-game. Hell Let Loose is a shooter, realistic and world war ii game developed and published by Team17. Released on July 27th 2021 has received 136,525 reviews of which 112,491 were positive and 24,034 were negative resulting in a rating of 8.2 out of 10. The game has hit the top spot as the #1 most played game like The Citadel, thanks to its 4,234 peak concurrent players over the last day.
8.2
112,491
24,034
4,234
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 202,451 reviews of which 184,508 were positive and 17,943 were negative resulting in an impressive rating of 9.0 out of 10. While seeing 1,219 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
184,508
17,943
1,219
players
3. DOOM
Similarity 52% 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 203,253 reviews of which 194,089 were positive and 9,164 were negative resulting in an impressive rating of 9.4 out of 10. While seeing 1,019 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
194,089
9,164
1,019
players
4. Half-Life
Similarity 58% Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world. Half-Life is a fps, classic and 1990's game developed and published by Valve. Released on November 19th 1998 has received 146,723 reviews of which 141,651 were positive and 5,072 were negative resulting in an impressive rating of 9.5 out of 10. With 673 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like The Citadel.
9.5
141,651
5,072
673
players
5. RoboCop: Rogue City
Similarity 52% Become the legendary part man, part machine, all cop hero and deliver justice in Old Detroit. RoboCop: Rogue City is a fps, action and first-person game developed by Teyon and published by Nacon. Released on November 02nd 2023 has received 20,381 reviews of which 18,166 were positive and 2,215 were negative resulting in a rating of 8.7 out of 10. With 621 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like The Citadel.
8.7
18,166
2,215
621
players
6. Borderlands Game of the Year Enhanced
Similarity 52% Discover the original co-op shooter-looter, crammed with new enhancements! As one of 4 trigger-happy mercenaries with RPG progression, equip bazillions of guns to take on the desert planet Pandora. Borderlands Game of the Year Enhanced is a fps, co-op and shooter game developed by Gearbox Software and Blind Squirrel Games and published by 2K. Released on August 31st 2023 has received 23,358 reviews of which 20,021 were positive and 3,337 were negative resulting in a rating of 8.4 out of 10. With 619 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like The Citadel.
8.4
20,021
3,337
619
players
7. Black Mesa
Similarity 53% Relive Half-Life. Black Mesa is a fps, remake and action game developed and published by Crowbar Collective. Released on March 06th 2020 has received 124,102 reviews of which 118,226 were positive and 5,876 were negative resulting in an impressive rating of 9.4 out of 10. With 419 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like The Citadel.
9.4
118,226
5,876
419
players
8. Easy Red 2
Similarity 56% Fight massive battles between infantry, armored vehicles, tanks, cannons and planes. Realistically manage your weapons and equipment, coordinate with your squad, and tactically navigate large, fully destructible open world maps. Experience the WW2 in singleplayer, PVP and Co-Op. Easy Red 2 is a world war ii, action and singleplayer game developed by Marco Amadei and published by Corvostudio di Amadei Marco. Released on January 06th 2022 has received 7,403 reviews of which 6,728 were positive and 675 were negative resulting in a rating of 8.8 out of 10. With 366 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like The Citadel.
8.8
6,728
675
366
players
9. STRAFTAT
Similarity 61% STRAFTAT video game ::::::::::::::::::::: 1v1 ONLINE first person pov SHOOTER ::::::::::::::: quick rounds in 100 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 6,072 reviews of which 5,860 were positive and 212 were negative resulting in an impressive rating of 9.3 out of 10. With 323 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like The Citadel.
9.3
5,860
212
323
players
10. Hotline Miami 2: Wrong Number
Similarity 56% 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 65,466 reviews of which 61,602 were positive and 3,864 were negative resulting in an impressive rating of 9.3 out of 10. With 309 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like The Citadel.
9.3
61,602
3,864
309
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 April 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 7,436 reviews of which 6,913 were positive and 523 were negative resulting in an impressive rating of 9 out of 10. Featuring a massive 95% discount, this game currently holds the #1 spot in the best deals for games like The Citadel.
9
6,913
523
-95%
25.00€
1.25€
2. The Hong Kong Massacre
Similarity 55% Blast your way through the streets of Hong Kong in a fast-paced, top-down shooter. Inspired by classic action movies, The Hong Kong Massacre places you at the center of a hard-boiled revenge story, filled with brutal, cinematic shootouts and vivid underworld locations. The Hong Kong Massacre is a action, bullet time and violent game developed by VRESKI and published by Untold Tales. Released on January 21st 2019 has received 1,637 reviews of which 1,218 were positive and 419 were negative resulting in a rating of 7.2 out of 10. Thanks to its incredible 93% discount, this game is now the #2 best deal in games like The Citadel.
7.2
1,218
419
-93%
19.14€
1.34€
3. Serious Sam 3: BFE
Similarity 58% Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter! Serious Sam 3: BFE is a fps, action and co-op game developed by Croteam and published by Devolver Digital. Released on November 22nd 2011 has received 27,625 reviews of which 24,414 were positive and 3,211 were negative resulting in a rating of 8.7 out of 10. Thanks to its incredible 91% discount, this game is now the #3 best deal in games like The Citadel.
8.7
24,414
3,211
-91%
29.33€
2.64€
4. Fobia - St. Dinfna Hotel
Similarity 55% Explore a decadent hotel across different timelines and uncover the dark history of a fanatical cult and your role in their plans. Fobia - St. Dinfna Hotel is a indie, survival horror and violent game developed by Pulsatrix Studios and published by Maximum Entertainment. Released on June 28th 2022 has received 1,910 reviews of which 1,635 were positive and 275 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 91% discount, this title has earned the #4 position in the best deals for games like The Citadel.
8.2
1,635
275
-91%
26.00€
2.34€
5. Dread Templar
Similarity 71% 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 1,484 reviews of which 1,241 were positive and 243 were negative resulting in a rating of 8.0 out of 10. Currently offered at a significant 90% discount, this title has earned the #5 position in the best deals for games like The Citadel.
8.0
1,241
243
-90%
19.30€
1.93€
6. WRATH: Aeon of Ruin
Similarity 71% Blast, slice and shred through your enemies in this hardcore FPS inspired by the icons of the '90s, powered by the legendary Quake-1 Tech. Taking place in a realm left to rot, take up arms, unearth long-forgotten secrets and hunt down the Guardians of the Old World. WRATH: Aeon of Ruin is a action, boomer shooter and fps game developed by KillPixel Games and Slipgate Ironworks and published by 3D Realms and Fulqrum Publishing. Released on February 27th 2024 has received 2,582 reviews of which 1,918 were positive and 664 were negative resulting in a rating of 7.2 out of 10. Currently offered at a significant 90% discount, this title has earned the #6 position in the best deals for games like The Citadel.
7.2
1,918
664
-90%
25.50€
2.55€
7. Hotline Miami 2: Wrong Number
Similarity 56% 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 65,466 reviews of which 61,602 were positive and 3,864 were negative resulting in an impressive rating of 9.3 out of 10. Currently offered at a significant 89% discount, this title has earned the #7 position in the best deals for games like The Citadel.
9.3
61,602
3,864
-89%
14.82€
1.63€
8. Day of Infamy
Similarity 52% Experience close-quarters battles in iconic WWII settings. Defend the line, storm the beach, torch the enemy, or use a radio to call in fire support. Day of Infamy is a teamwork-oriented shooter that will keep you on your toes and coming back for more with its diverse game modes and authentic arsenal. Day of Infamy is a world war ii, fps and multiplayer game developed and published by New World Interactive. Released on March 23rd 2017 has received 22,061 reviews of which 18,187 were positive and 3,874 were negative resulting in a rating of 8.1 out of 10. Currently offered at a significant 89% discount, this title has earned the #8 position in the best deals for games like The Citadel.
8.1
18,187
3,874
-89%
12.64€
1.39€
9. Scorn
Similarity 54% Scorn is an atmospheric first-person horror adventure game set in a nightmarish universe of odd forms and somber tapestry. Scorn is a gore, horror and atmospheric game developed by Ebb Software and published by Kepler Interactive. Released on October 14th 2022 has received 15,177 reviews of which 11,627 were positive and 3,550 were negative resulting in a rating of 7.5 out of 10. Currently offered at a significant 89% discount, this title has earned the #9 position in the best deals for games like The Citadel.
7.5
11,627
3,550
-89%
40.45€
4.45€
10. Duke Nukem 3D: 20th Anniversary World Tour
Similarity 52% 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 5,571 reviews of which 4,709 were positive and 862 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 87% discount, this title has earned the #10 position in the best deals for games like The Citadel.
8.2
4,709
862
-87%
20.38€
2.65€
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 April 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 61% STRAFTAT video game ::::::::::::::::::::: 1v1 ONLINE first person pov SHOOTER ::::::::::::::: quick rounds in 100 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 6,072 reviews of which 5,860 were positive and 212 were negative resulting in an impressive rating of 9.3 out of 10. With 323 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like The Citadel.
9.3
5,860
212
323
players
2. PAPERHEAD EP.0
Similarity 75% 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 1,443 reviews of which 1,347 were positive and 96 were negative resulting in a rating of 8.9 out of 10. The game currently holds the #2 spot among the most played free games like The Citadel.
8.9
1,347
96
43
players
3. Propagation VR
Similarity 52% Combining survival horror and static wave shooting, Propagation VR will get your adrenaline pumping as you try to survive a zombie apocalypse. Armed only with your guns and your fists, fight off terrifying zombies and other multi-species mutants. Will you get out alive? Propagation VR is a vr, action and horror game developed and published by WanadevStudio. Released on September 25th 2020 has received 5,587 reviews of which 5,269 were positive and 318 were negative resulting in an impressive rating of 9.1 out of 10. The game currently holds the #3 spot among the most played free games like The Citadel.
9.1
5,269
318
17
players
4. Quake II RTX
Similarity 60% 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 4,555 reviews of which 3,982 were positive and 573 were negative resulting in a rating of 8.5 out of 10. The game currently holds the #4 spot among the most played free games like The Citadel.
8.5
3,982
573
6
players
5. Shadow Warrior Classic (1997)
Similarity 59% Strap on your combat sandals...Lo Wang is coming to the Land of the Rising Sun to turn out the lights. Experience total blood immersion. If you can't touch, kill or drive something...then blow it away! Whether you're wielding shurikens, an Uzi, or a freshly plundered Guardian head...you've got your work cut out for you. Shadow Warrior Classic (1997) is a fps, classic and free to play game developed by 3D Realms and published by Devolver Digital. It has received 1,471 reviews of which 1,366 were positive and 105 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #5 spot among the most played free games like The Citadel.
8.8
1,366
105
3
players
6. A.W.O.L.
Similarity 55% 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 1,029 reviews of which 822 were positive and 207 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
822
207
3
players
7. Dystopia
Similarity 57% Dystopia is a cyberpunk game with tense combat situations in a high-tech world spanned by computer networks. Playing as either Punk mercenaries, or Corporate security forces, the player will fight through the physical world to gain access, via jack-in terminals, to cyberspace. Dystopia is a free to play, multiplayer and action game developed by Puny Human and published by . Released on February 06th 2009 has received 1,089 reviews of which 926 were positive and 163 were negative resulting in a rating of 8.1 out of 10. The game currently holds the #7 spot among the most played free games like The Citadel.
8.1
926
163
2
players
8. AQtion
Similarity 59% 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 414 reviews of which 328 were positive and 86 were negative resulting in a rating of 7.5 out of 10. The game currently holds the #8 spot among the most played free games like The Citadel.
7.5
328
86
2
players
9. LOEK
Similarity 61% LOEK is a FPS where the goal is to shoot farm animals with a rocket launcher. LOEK is a indie, action and free to play game developed and published by Ulbe. Released on February 10th 2020 has received 1,044 reviews of which 975 were positive and 69 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #9 spot among the most played free games like The Citadel.
8.8
975
69
1
players
10. Shrine II
Similarity 64% 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 827 reviews of which 765 were positive and 62 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #10 spot among the most played free games like The Citadel.
8.7
765
62
1
players