Top similar games like The Citadel:

3D Realms, creators of Duke Nukem 3D, Prey, and Max Payne, are excited to team up with Voidpoint to bring back the legendary Build Engine, famously known for classic first-person shooters like Duke Nukem 3D, Shadow Warrior, and Blood. Ion Fury is the real deal!

V.R.G. is a FPS cross between a retro-style and a modern-style , Defeat enemies and get combos to improve operability, and eat scatter pieces of meat to recover.

GAL VS VILLAGE is an GAL like old-school FPS. You play as Kessenji “Blood-sucker” Yui, infiltrate the village, and must bring the situation under control. Move at high speed, swing your knife, blast away with the shotgun, and drive away the supernatural!!!!!!

COVEN is a hyper-violent retro FPS where your path of vengeance will take you across time and space. Destroy your enemies and eat their flesh.

Make mincemeat out of cults and chop heads with machetes! Old school shooter staples and gals, and a familiar difficulty level. Ye shall witness a new struggle!

Sinned Arena is a classic arena shooter inspired by timeless 90s games. You are trapped in Hell with other unfortunate souls, fighting among each other for demons twisted pleasures. Fight for your way out this dark place but beware, demons aren't there just to watch.

A retrowave/mecha-inspired sci-fi first-person shooter featuring fast-paced combat in old-school style open-plan levels packed with pickups, keys, and secrets.

Death is only the beginning. Crawl from your grave and gear up to fight your way through the ranks of a mysterious and twisted cult. You, your guns, and your dynamite will have to shoot, slide, blast, duck, dodge, and maybe throw a gib or two to survive in this old-school-inspired shooter.

Load up your Boltgun and unleash the awesome Space Marine arsenal to blast your way through an explosion of sprites, pixels and blood in a perfect blend of Warhammer 40,000, frenetic gameplay and the stylish visuals of 90’s retro shooters.

Introducing the Master Levels for DOOM II. Twenty never-before-seen levels all with the same acid drenched, hell spawned horror of the originals. Each was created by independent designers and supervised by the demented minds of id Software. You might as well forget about seeing the light of day ever again.

Join private investigator Jack Pepper on a guns blazing, jazz-fueled adventure in MOUSE: P.I. For Hire. MOUSE combines the charm of hand-drawn rubber hose animation inspired by the classic cartoons of the 1930’s with the adrenaline and action of an explosive first person shooter.

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.

The Apogee Throwback Pack is a collection of four classic Apogee Software titles all in one kick ass package. Blast your way across the galaxy as British Special Agent Blake Stone in "Aliens of Gold" and "Planet Strike", then take on an ancient evil menace as the H.U.N.T in "Rise of the Triad".

Borrowhelen is a 90s-style first-person shooter set in a fantastical realm like no other. As the brilliant scientist Ordin Gilbellt, you dive into battle against cultists and mythical creatures, wielding powerful and unique weapons.

BLOW-UP: AVENGE HUMANITY is a single-player fast paced first person shooter campaign where you take control of an industrial robot rewired by the last human being to violently dispatch the alien race accountable for Earth’s destruction. Are you ready to become the ultimate avenger?

Selaco is a brand new original shooter inspired by classics, featuring thrilling action set pieces, destructibility, smart enemies and a fleshed out story taking place within an immersive game world.

You are part of an elite group of operatives called HUNT (High-risk United Nations Taskforce), and you must stop a maniac cult leader from killing millions of people. You are equipped with high-tech weaponry and magical instruments that defy description to invade the monastery and stop the madness.

Perilous Warp is a fast-paced indie retro-shooter inspired by the classic 3D-actions. Communication with a distant space colony has been lost, and you bravely step into the teleporter with the desire for glorious adventures. But do not expect to win in a heartbeat!

Dino Trauma introduces you to a secret laboratory somewhere in eastern Europe where gore and dinosaurs aren't unusual things. Retro FPS inspired by the '90s legends.

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?

HROT is a single-player retro FPS set in a small socialist country neighboring Soviet Union (Czechoslovakia) after an unspecified disaster in 1986. Those times were dark and terrifying and so is the game.

Obliterate heretics in the name of the Emperor in Warhammer 40,000: Boltgun 2! Malum Caedo is back in this sequel to retro FPS Warhammer 40,000: Boltgun with MORE enemies, MORE weapons, and NEW ways to purge!

The veil between life and death is shattered. Corpses walk, the earth trembles, and chaos reigns. As the Undertaker, your duty is clear return the dead to the dead by any means necessary. Inspired by classic FPS games like DOOM and Blood fast-paced action in a world gone mad.

A retro first-person shooter inspired by classics of the '90s mixed with a dungeon crawler. Fight your way through randomly-generated levels and uncover the secrets of an abandoned research station for interdimensional travel.

Play as Madeline, who broke into an abandoned plant chasing a legendary prize buried in rusted halls. But something else was waiting, grotesque toys that move and kill on sight. Navigate toxic corridors and decaying machinery. No jumping. No lifts. Just pure, grounded old-school carnage.

Grab your sawed-off, cast some sigils, and face the never ending nightmare head on in Venison County. Blast your old neighbors into undead venison giblets, master weapon specific active reloads, and limitlessly combine slain cultists' sigils for their sinful buffs (if you can withstand God's wrath).

Meet Zortch Maxinum: short order cook, amateur engineer and professional slacker; Bored and tired of her day job she decides to go on a holiday but alas she picks a cheap option: turns out it's a scheme by aliens who capture humans to eat their brains! also this game is a sci-fi horror comedy fps

Prepare for terror in this ground-breaking classic old-school FPS. Following the destruction of Time you are left to battle in this horrific hellhole of multilevel interconnected missions populated by gruesome grotesque creatures.

Years into a brutal lockdown, a once-thriving city lies in ruins, abandoned by its government and overrun by vicious, mindless infected. Grab your hammer, collect your nerves and enter the mayhem.

In the year 202X, the world is "YAMI"...! To save the world, go to hell and kill all the demons. Yes, just like ordering a Frappuccino at a cool cafe!

Slip into the Standard Issue Biosuit as Myo Hyori, a gifted Korean teenage girl who must face the perils of the future. Survive many hazards, explore a seemingly endless metropolis and beyond as the world around you implodes and history marches towards its inevitable conclusion.