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 30th 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 136,949 reviews of which 112,848 were positive and 24,101 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 3,764 peak concurrent players over the last day.
8.2
112,848
24,101
3,764
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 203,103 reviews of which 185,114 were positive and 17,989 were negative resulting in an impressive rating of 9.0 out of 10. While seeing 1,470 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
185,114
17,989
1,470
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 204,139 reviews of which 194,947 were positive and 9,192 were negative resulting in an impressive rating of 9.4 out of 10. While seeing 1,008 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
194,947
9,192
1,008
players
4. 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 21,568 reviews of which 19,167 were positive and 2,401 were negative resulting in a rating of 8.7 out of 10. With 617 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like The Citadel.
8.7
19,167
2,401
617
players
5. 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 147,168 reviews of which 142,078 were positive and 5,090 were negative resulting in an impressive rating of 9.5 out of 10. With 578 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like The Citadel.
9.5
142,078
5,090
578
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 23,445 reviews of which 20,054 were positive and 3,391 were negative resulting in a rating of 8.4 out of 10. With 438 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like The Citadel.
8.4
20,054
3,391
438
players
7. 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 7,761 reviews of which 7,047 were positive and 714 were negative resulting in a rating of 8.8 out of 10. With 421 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like The Citadel.
8.8
7,047
714
421
players
8. 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 124,385 reviews of which 118,489 were positive and 5,896 were negative resulting in an impressive rating of 9.4 out of 10. With 399 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like The Citadel.
9.4
118,489
5,896
399
players
9. DOOM + DOOM II
Similarity 77% 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 24,412 reviews of which 23,534 were positive and 878 were negative resulting in an impressive rating of 9.4 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.
9.4
23,534
878
323
players
10. STRAFTAT
Similarity 63% 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 6,564 reviews of which 6,334 were positive and 230 were negative resulting in an impressive rating of 9.3 out of 10. With 293 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like The Citadel.
9.3
6,334
230
293
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 30th 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 7,473 reviews of which 6,947 were positive and 526 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
6,947
526
-95%
25.00€
1.25€
2. Valfaris
Similarity 58% 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 2,515 reviews of which 2,079 were positive and 436 were negative resulting in a rating of 8.0 out of 10. Thanks to its incredible 95% discount, this game is now the #2 best deal in games like The Citadel.
8.0
2,079
436
-95%
20.00€
1.00€
3. Outlast 2
Similarity 50% Outlast 2 introduces you to Sullivan Knoth and his followers, who left our wicked world behind to give birth to Temple Gate, a town, deep in the wilderness and hidden from civilization. Knoth and his flock are preparing for the tribulations of the end of times and you’re right in the thick of it. Outlast 2 is a horror, psychological horror and survival horror game developed and published by Red Barrels. Released on April 24th 2017 has received 55,116 reviews of which 50,337 were positive and 4,779 were negative resulting in a rating of 9.0 out of 10. Thanks to its incredible 94% discount, this game is now the #3 best deal in games like The Citadel.
9.0
50,337
4,779
-94%
30.67€
1.84€
4. 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 1,649 reviews of which 1,226 were positive and 423 were negative resulting in a rating of 7.2 out of 10. Currently offered at a significant 93% discount, this title has earned the #4 position in the best deals for games like The Citadel.
7.2
1,226
423
-93%
19.14€
1.34€
5. Necromunda: Hired Gun
Similarity 54% 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 7,369 reviews of which 4,844 were positive and 2,525 were negative resulting in a rating of 6.5 out of 10. Currently offered at a significant 92% discount, this title has earned the #5 position in the best deals for games like The Citadel.
6.5
4,844
2,525
-92%
39.50€
3.16€
6. 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 1,922 reviews of which 1,646 were positive and 276 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 91% discount, this title has earned the #6 position in the best deals for games like The Citadel.
8.2
1,646
276
-91%
26.00€
2.34€
7. Hard Reset Extended Edition
Similarity 70% Over-the-top destruction, loads of enemies & a beautifully realized cyberpunk setting. Hard Reset is here to shake up the shooter scene. Try the demo now. Hard Reset Extended Edition is a fps, cyberpunk and action game developed by Flying Wild Hog and published by Good Shepherd Entertainment. Released on July 12th 2012 has received 4,798 reviews of which 3,929 were positive and 869 were negative resulting in a rating of 7.9 out of 10. Currently offered at a significant 90% discount, this title has earned the #7 position in the best deals for games like The Citadel.
7.9
3,929
869
-90%
14.99€
1.49€
8. 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 65,806 reviews of which 61,945 were positive and 3,861 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 #8 position in the best deals for games like The Citadel.
9.3
61,945
3,861
-89%
14.82€
1.63€
9. Viscerafest
Similarity 53% Viscerafest is a Sci-Fi Fantasy Singleplayer Arena FPS with minor Collectathon elements. Fight through hordes of aliens and eldritch monstrosities wielding a slew of powerful weapons, juggling your resources, and exploring over 23 intricately designed hand-crafted levels. Viscerafest is a shooter, female protagonist and boomer shooter game developed by Acid Man Games and Fire Plant Games and published by Fulqrum Publishing. Released on April 14th 2025 has received 575 reviews of which 499 were positive and 76 were negative resulting in a rating of 8.1 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.
8.1
499
76
-89%
20.00€
2.20€
10. 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 22,064 reviews of which 18,191 were positive and 3,873 were negative resulting in a rating of 8.1 out of 10. Currently offered at a significant 89% discount, this title has earned the #10 position in the best deals for games like The Citadel.
8.1
18,191
3,873
-89%
12.64€
1.39€
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 30th 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 63% 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 6,564 reviews of which 6,334 were positive and 230 were negative resulting in an impressive rating of 9.3 out of 10. With 293 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like The Citadel.
9.3
6,334
230
293
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 1,560 reviews of which 1,455 were positive and 105 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
1,455
105
38
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 5,594 reviews of which 5,275 were positive and 319 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
5,275
319
13
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 4,568 reviews of which 3,993 were positive and 575 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
3,993
575
4
players
5. Chex Quest HD
Similarity 56% Travel to the remote planet of Bazoik to free galactic citizens from the evil cereal-eating Flemoids! Venture deep into the caverns of Bazoik, using an array of "zorching" devices to send these nefarious foes back to their home dimension! Chex Quest HD is a free to play, action and indie game developed by Team Chex Quest HD and Flight School Studio and published by General Mills. Released on May 18th 2020 has received 2,012 reviews of which 1,612 were positive and 400 were negative resulting in a rating of 7.7 out of 10. The game currently holds the #5 spot among the most played free games like The Citadel.
7.7
1,612
400
4
players
6. 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 974 were positive and 70 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #6 spot among the most played free games like The Citadel.
8.8
974
70
3
players
7. Shrine
Similarity 58% Shrine is a retro FPS game about a skinless dude killing eldritch monstrosities with his nightmarish arsenal. Shrine is a action, fps and retro game developed and published by Scumhead. Released on April 03rd 2020 has received 879 reviews of which 808 were positive and 71 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #7 spot among the most played free games like The Citadel.
8.7
808
71
1
players
8. Devolverland Expo
Similarity 62% 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 5,723 reviews of which 5,106 were positive and 617 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #8 spot among the most played free games like The Citadel.
8.6
5,106
617
1
players
9. 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 #9 spot among the most played free games like The Citadel.
8.1
926
163
1
players
10. 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 1,034 reviews of which 827 were positive and 207 were negative resulting in a rating of 7.6 out of 10. The game currently holds the #10 spot among the most played free games like The Citadel.
7.6
827
207
1
players